Numbers Questions

If the Arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is

30% of a number exceeds 25% of the same number by 27. What is the value of the number?

What is the least number that when divided by 63 and 105 leaves remainder 4 in each case?

For what value of X, 211X will be a perfect square?

How many numbers are there from 300 to 700 which are divisible by 2, 3 and 7?

The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?

Assuming that the numbers in each of the following figures follow a similar pattern, select the option that can replace the question mark (?) in figure C.

Product of digits of a 2-digit number is 72. If we add 9 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.