Average marks in Mathematics of Section A comprising 30 students is 65 and that of Section B comprising 35 students is 70. What are the average marks (approximately) of both the sections if it was detected later that an entry of 47 marks was wrongly made as 74?

The sum of two numbers is 480. If the bigger number is decreased by 2% and the smaller number is increased by 10%, then the numbers obtained are equal. The larger number is approximately

In an enclosure there are crows and cows. If there are 30 heads and 100 legs, what is the ratio of cows to crows?

If sides of a triangle are in the ratio 1:√3:2, what is the ratio of corresponding angles?

Consider the following statements: I. Two consecutive natural numbers are always co-prime. II. If m and n are relatively prime, then m × n is always even. Which of the statements given above is/are c…

The first pair of numbers bear a certain relationship. The same relationship is required to be found in the other pair, Find that missing number : 35 : 6 : : 120 :?