COMPETITIVE EDUCATION

How to Solve Quadratic Equation? – Tips & Tricks Dear Aspirants, When we deal with Quadratic Equations problem in Quantitative Aptitude, we should use time saving tricks. The ideal & fast way to proceed, including the tricks, is given below:- 1. Write down the table (given below) before exam starts, in your rough sheet, for use during exam, Analyse the (+, -) signs in the problem, and refer to the table of signs, 2. Write down the new (solution) signs, and see if a solution is obtained instantly. If not, then go to step 3. 3. Obtain the two possible values for X & Y, from both the equations, 4. Rank the values and get the solution STEP 1 Firstly, when you enter the exam hall, you need to write down the following master table in your rough sheet instantly (only the signs):- NOTE: The above table should be entered before the exam starts, in rough sheet. Because, this will save time, and you can refer to it instantly later on. STEP 2 Try solving the...

Short Tricks on Trigonometric Identitied Today we will be covering a very important topic from the Advance Maths part of the Quantitative Aptitude section that is – Important Notes & Short Tricks on Trigonometric Identities. Important Short Tricks on Trigonometric Identities Pythagorean Identities sin2 θ + cos2 θ = 1 tan2 θ + 1 = sec2 θ cot2 θ + 1 = csc2 θ Negative of a Function sin (–x) = –sin x cos (–x) = cos x tan (–x) = –tan x csc (–x) = –csc x sec (–x) = sec x cot (–x) = –cot x If A + B = 90o, Then Sin A = Cos B Sin2A + Sin2B = Cos2A + Cos2B = 1 Tan A = Cot B Sec A = Csc B For example:  If tan (x+y) tan (x-y) = 1, then find tan (2x/3)? Solution:          Tan A = Cot B, Tan A*Tan B = 1 So, A +B = 90o (x+y)+(x-y) = 90o, 2x = 90o , x = 45o Tan (2x/3) = tan 30o = 1/√3 If A - B = 90o, (A › B) Then Sin A = Cos B Cos A = - Sin B Tan A = - Cot B If A ± B = 180o, then Sin A = Sin B Cos A = - Cos B If A + B = 180o...

          Ranking and Ordering Tricks The position of a thing/person etc. in a definite order is called as ‘Rank’. In this type of test, relative position or rank of some person or object are given and candidates are required to find the rank or position of other person or object. Type of Questions Type 1. Rank of a person in a queue Position of person from upward = [Total no. of persons – position of person from down] + 1. Position of person from downward = [Total no. of persons – position of person from up] + 1. Position of person from right = [Total no. of persons – position of person from left] + 1. Position of person from left = [Total no. of persons – position of person from right] + 1. Example 1: Anita ranks twelfth in a class of forty six. What will be her rank from the last? 34th 35th 36th 37th Solution. (2): Rank of Anita from the last = [Total students – her rank from first] + 1 = (46 – 12) + 1 = 35th. Example 2: Ra...

1) Poles : Magnet :: ? : Battery A.    Energy B.    Power C.    Terminals D.    Cells View Answer / Explanation Answer / Explanation : Answer : C. As magnet has poles similarly battery has terminals. 2) Peace : Chaos :: Creation : ? A.    Manufacture B.    Destruction C.    Build D.    Construction View Answer / Explanation Answer / Explanation : Answer : B. As opposite meaning of peace is chaos similarly opposite meaning of creation is destruction. 3) Architect : Building :: Sculptor : ? A.    Museum B.    Statue C.    Chisel D.    Stone View Answer / Explanation Answer / Explanation : Answer : D. As 'Architect' makes 'Building' similarly 'Sculptor' makes 'Statue'. 4) Horse : Mare :: A.    Fox : Vixen B.    Duck : Geese C.    Dog : Puppy D.    Donkey : Pony View Answe...

    Dear Readers, We are providing you Important Concept & Short Tricks on Coding - Decoding Questions in Reasoning which are usually asked in Bank Exams. Use these below given short cuts to solve questions within minimum time.                          What is the approach to solve the questions of this section? Observe alphabets or numbers given in the code keenly. Find the sequence it follows whether it is ascending or descending. Detect the rule in which the alphabets/numbers/words follow. Fill the appropriate letter/number/word in the blank given. Some Basics which we need to learn before solving the questions of this topic are: Letter position (A=1, B=2, C=3, D=4 …… Y=25, Z=26) Opposite position of letters  (A=26, B=25 …… Z=1) Opposite of each letter (A is opposite to Z and B is opposite to Y and C is opposite to X …… and so on) Various types on which Coding and Decoding are classifi...

1. Pointing to a photograph of a boy Suresh said, "He is the son of the only son of my mother." How is Suresh related to that boy? A. Brother B. Uncle C. Cousin D. Father Answer: Option D Explanation: The boy in the photograph is the only son of the son of Suresh's mother i.e., the son of Suresh. Hence, Suresh is the father of boy. View Answer Discuss 2. If A + B means A is the mother of B; A - B means A is the brother B; A % B means A is the father of B and A x B means A is the sister of B, which of the following shows that P is the maternal uncle of Q? A. Q - N + M x P B. P + S x N - Q C. P - M + N x Q D. Q - S % P Answer: Option C Explanation: P - M → P is the brother of M M + N → M is the mother of N N x Q → N is the sister of Q Therefore, P is the maternal uncle of Q. View Answer Discuss 3. If A is the brother of B; B is the sister of C; and C is the father of D, how D is related to A? A. Brother B. Sister C. Nephew...

In Blood Relations, certain information is given about the members of the family in the question, Based on that information we need to find out the relationship between a particular member of the family. Generally, the question deals with a hierarchical structure which is based on seven generation three above & three below like this:

Definitions of Basic Sentence Parts THE PARTS OF SPEECH The eight parts of speech — verbs, nouns, pronouns, adverbs, adjectives, prepositions, conjunctions, and interjections — are defined on the pages hyperlinked below. (Some authorities would not list interjections, but would list determiners or articles, instead.) In addition, you can use the Powerpoint presentation on the Parts of Speech. Visit the page on Powerpoint for further information. The terms below — and over 300 others — are also listed in the Guide's INDEX. Here's a little rhyme — by David B. Tower & Benjamin F. Tweed —that teachers used in days gone by to help students learn the parts of speech. (We include it here in response to popular demand. Why the song leaves out pronouns is a mystery. A writer from Richland, Washington, suggests "A PRONOUN replaces any noun: / he, she, it, and you are found. ) It has been set to music, but we'll leave that up to you to discover or create for your...

The 12 Basic English Tenses The English Tense System The links below are to lessons for each of the 12 basic English tenses. In each lesson we look at two aspects of the tense: Structure: How do we make the tense? Use: When and why do we use the tense? Some lessons look at additional matters, and most of them finish with a quiz to check your understanding.            Present Simple I do, I do do            Present Continuous I am doing             Present Perfect I have done             Present Perfect Continuous I have been doing             Past Simple I did, I did do            Past Continuous I was doing            Past Perfect I had done            Past Perfect Continuous I had been doing         ...

Indian History Questions Answers.            1. What was the time period of Indus Civilization / Harappan Civilization ? 2400 BC - 1700 BC 2400 BC - 1750 BC 2500 BC - 1700 BC 2500 BC - 1750 BC  Answer And Explanation Answer: Option D Explanation:  View Answer  Comment on this question 2. Which was the largest site of Indus Civilization ? Mohenjodaro Lothal Chanhudaro Dholavira  Answer And Explanation Answer: Option A Explanation:  View Answer  Comment on this question 3. Which was the largest Indian site of Indus Civilization ? Mohenjodaro Lothal Chanhudaro Dholavira  Answer And Explanation Answer: Option D Explanation:  View Answer  Comment on this question 4. Indus people were first to produce cotton in the world ? TRUE FALSE  Answer And Explanation Answer: Option A Explanation:  View Answer  Comment on this question 5. Which two Indus sites found...

Physics Basic Formulas .                                  Basics of the Basics. Everything in brackets on last sentences are the unite' s=d/t Speed = distance / time. Average speed = total distance / total time. (m/s or cm/s) v=d/t Velocity= displacement / time . (m/s + direction) a=(vf-vi)/t or Δv/t Acceleration is equal to (final v - initial v) / time. (m/s²) g=10 m/s² Gravity; acceleration of a free falling object is 10 m/s². (m/s² or N/kg) F=ma Newton's 2nd Law; the force on an object is equal to the product of its mass and acceleration. (Newtons (N)) Fg=mg=W Force of gravity on an object is the product of the mass and gravity, which is its weight. (N) F=kx Hooke's law: The extension of a spring (x) is proportional to the load placed on the spring (F), until it reaches the limit of proportionality. K is the spring constant; it is in N/m or N/cm. It is a number that des...

Current Affairs Today - Current Affairs 2018 United Nations launches UN Road Safety Trust Fund April 14, 2018 United Nations has launched UN Road Safety Trust Fund to improve road safety worldwide to save lives and prevent the loss of opportunity associated with road accidents. UN Economic Commission for Europe (UNECE) is secretariat for the trust fund. The fund has potential to galvanise global efforts to address road safety situation, building on progress made and experience gained over Decade of Action for Road Safety 2011-2020. United Nations Road Safety Trust Fund The fund aims to accelerate progress in improving global road safety by bridging gaps in mobilization of resources for effective action at all levels. It will mobilize resources from governments, intergovernmental or non-governmental organizations (NGOs), private sector, philanthropic organizations and individuals. It will support efforts along five pillars of Global Plan for Decade of Action for Road Safety (2...

Basics of Simplification Hello readers, As we all know that simplification is most widely asked topic in almost every banking exam. So let us try to understand what is actually meant by word ‘Simplification’. Simplification means to find out a final answer for a complex calculation. Simplification questions are asked to check the ability of a student to deal with numbers which can be in one of the following two types. Sometimes, a calculation is given and one of the numbers is missing from the calculation. To find out the missing number, we have to approximate the given numbers or do the basic operations. Sometimes all the numbers are given with some operations between them & we have to simplify the calculation. Rules related to Simplification Rule-(I) Replace ‘of’ by ‘Multiplication’ & ‘/’ by ‘Division’. Explanation: Whenever we find ‘of’ in a simplification problem, we can replace that by ‘multiplication(*)’. Similiarly ‘/’ can be replaced by ‘÷’. Example: Find...

Learn the basics of Number Series .          Dear Aspirants, Number Series often daunts many of you. However, it is a major topic asked in the Quantitative Aptitude Section. The questions under this topic are usually asked in a set of 5. Apart from being less time consuming, it is also highly scoring. Hence, we advice you all to have a thorough practice of this topic. Today we are sharing with you all some study notes to help you all clear the basics of this topic. A number series is nothing but a sequence of numbers arranged in some logical way. This topic basically consists of a set of numbers connected by a specific pattern and you need to identify the pattern and answer the missing number or you may be asked to identify the number that doesn't fit the pattern. Numbers can have interesting patterns. Here we list the most common patterns and how they are made :- 1. Arithmetic (Difference/Sum based)  : An arithmetic series is obtained by adding or s...

Government appoints Vineet Joshi as first DG of National Testing Agency March 31, 2018No comments Government has appointed former chairman of Central Board of Secondary Education (CBSE) Vineet Joshi, as the first Director-General (DG) of the National Testing Agency (NTA). He will have tenure of five years. He is 1992-batch IAS officer of the Manipur cadre. Prior to this appointment, he was resident commissioner of Manipur government. During his stint as CBSE chairman, he had introduced big changes such as Continuous Comprehensive Evaluation (CCE) and making Class X board examination optional. National Testing Agency (NTA) NTA was approved by the Union cabinet in November 2017. It is autonomous and self-sustained premier testing organization to conduct entrance examinations for higher educational institutions in India. It is registered as society under Indian Societies Registration Act, 1860. Composition: NTA will be chaired by eminent educationist appointed by Ministry of Human...

Sports GK General Knowledge Questions 1. Which Indian umpire has been recently promoted as umpire for International Hockey Federation (FIH)? [A]Deepika Kaul [B]Nepoleon Singh [C]Satinder Sharma [D]Durga Thakur Hide Answer Durga Thakur Durga Thakur from India has recently been promoted to international outdoor umpire by the International Hockey Federation (FIH) following her good performance at the recently-held Hawkes Bay Cup in Hastings, New Zealand. She is a physical education teacher at Modern School, New Delhi and represented her state Himachal Pradesh in the National Championships in three sporting disciplines viz. handball, basketball and hockey. 2. Who has won the 2016 Laureus World Sportsman of the Year Award? [A]Lewis Hamilton [B]Usain Bolt [C]Novak Djokovic [D]Lionel Messi Hide Answer Novak Djokovic Novak Djokovic of Serbia has won the 2016 Laureus World Sportsman of the Year Award in Berlin, Germany. Beside this, 2016 Laureus World Sportswoman of the Year ...

Lengthy Constitution Indian Constitution has 395 Articles and 12 Schedules. It was framed by a Constituent Assembly which was established for the purpose in 1946. The Constitution of India is the lengthiest constitution in the world as no other constitution contains as many articles. The constitution of USA has 7 Articles, China 138, Japanese 103 and Canadian 107 Articles. India is a Sovereign, Socialist, Secular, Democratic and Republic State The Constitution declares India to be a Sovereign, Socialist, Secular, Democratic, Republic. Sovereign means absolutely independent, it is not under the control of any other state. Socialist involves a system which will endeavour to avoid concentration of wealth in a few hands and will assure its equitable distribution. It also implies that India is against exploitation in all forms and believes in economic justice to all its citizens. Secular means there is no state religion in India. Every citizen is free to follow and practice the re...