Quantitative Aptitude - Arithmetic Ability Questions

The mean of a distribution is 21 and the standard deviation is 7. What is the value of the coefficient variation?

A shopkeeper marks up his wares by 60% and offers 25% discount. What will be the selling price (in Rs) if the cost price is Rs 1600?

The arithmetic mean of the marks scored by students of a class is 58. 20% of them secured a mean score of 60. The mean score of another 30% of the students was 40. The mean score of the remaining students is

Out of two numbers, 30% of the smaller number is equal to 18% of the larger number. If the sum of the two numbers is 840, then what is the value of the larger number?

When a number is increased by 34, it becomes 117% of itself. What is the number?

What is the value of cos2A/(1 + sinA)?

Find the odd words/letter/number from the given alternatives:

Select the odd word/letters/number/number pair from the given alternatives.