What approximate value will come in place of the question mark(?) in the below question?

(47% of 1442  - 36% of 1412) + 63 = ?

How many prime numbers are there between the positive integers 60 and 100?

The sum of two fractions is 3/4. One of them is 2/3. What is the other fraction?

The sum of 5/8 and 8/5 is

If the number x3451 is divisible by 3, where x is a digit, what can be the sum of all such values of x?

If 70% of 5/7th of a number is 90, find the number.

In a number system, on dividing 11509 by a certain number, Mukesh gets 71 as quotient and 7 as remainder. What is the divisor?

Three numbers are given in which the second is triple the first and is also double the third. If the average of the three numbers is 66. Find the first number.

In a fraction when 3 is added to its numerator and denominator it becomes 4/5. And it becomes 1/2 when 2 is subtracted from both the numerator and denominator. Find the fraction.