1. If 1/n of a work is done by A in one day, then A will take n days to complete the full work. 2. If A can do a piece do a piece of work in X days and B can do the same work in Y days, then both of them working together… Continue reading Time and Work Important Formulae – Quantitative Aptitude

# Category: Aptitude

## Important Quantitative Fromulae – Profit and Loss

1. Gain = SP – CP 2. Loss = CP – SP 3. Gain on Rs. 100 is Gain per cent 4. Gain% = (Gain * 100)/CP 5. Loss on Rs. 100 is Loss per cent 6. Loss% = (Loss * 100)/CP 7. When the Cost Price and Gain per cent are given: SP =… Continue reading Important Quantitative Fromulae – Profit and Loss

## Important Quantitative Fromulae for Aptitude tests – Average

1. Average = Sum of quantities/ Number of quantities 2. Sum of quantities = Average Number of quantities 3. The average of first n natural numbers is (n +1)/2 4. The average of the squares of first n natural numbers is (n +1)(2n+1)/6 5. The average of cubes of first n natural numbers is… Continue reading Important Quantitative Fromulae for Aptitude tests – Average

## SIMPLIFICATION QUESTIONS FOR BANK EXAMS

SIMPLIFICATION RELATED QUESTIONS This is aptitude questions and answers section on Simplification and Approximation with explanation for various interview, competitive examinations and entrance tests. Simplification is the most topic of bank exams , like – sbi po, ibps po , ibps clerk and other bank exams . 1. 21363 + 37 + 5637 + 219… Continue reading SIMPLIFICATION QUESTIONS FOR BANK EXAMS

## TIME AND WORK

1. A is able to do a piece of work in 15 days and B can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left? Ans- 8/15 EXPLANATION – Amount of work A can do in 1 day = 1/15 Amount of… Continue reading TIME AND WORK

## Important Aptitude Formulae – Ratio and Proportion

1. If four quantities are in proportion, then Product of Means = Product of Extremes. In the proportion a:b::c:d, we have bc = ad 2. If a:b::c:x, x is called the fourth proportional of a, b, c. a/b = c/x or, x = bc/a. 3. If two numbers are in a:b ratio and the sum… Continue reading Important Aptitude Formulae – Ratio and Proportion

## Important Quantitive Formulae – Algebra Formulae

Here are most important mathematics Formulae for Algebra 1. (a+b)2 = a2 + 2ab + b2 2. (a-b)2 = a2 – 2ab + b2 3. (a+b)2 = (a-b)2 + 4ab 4. (a-b)2 = (a+b)2 – 4ab 5. (a+b)3 = a3+b3+3ab(a+b) = a3+b3+3a2b+3ab2 6. (a-b)3 = a3 – b 3 -3ab(a-b) = a3 – b 3… Continue reading Important Quantitive Formulae – Algebra Formulae

## Important Formulae – Number System

Number system important formulae 1. When sum and difference of two numbers (X and Y) are given, then X = (sum + difference)/2 Y = (sum + difference)/2 2. Sum of first n odd numbers is n2 3. Sum of first n even numbers n(n+1) 4. Difference between two digits of two digit number is… Continue reading Important Formulae – Number System