Three numbers are in G.P. whose sum is 70. If the extremes be each multiplied by 4 and the means by 5, they will be in A.P. Find the numbers.

Find four numbers in G.P. whose sum is 85 and product is 4096.

The mean of a set of numbers is X. If each number is multiplied by z, the mean is

The digits of a positive integer, having three digits, are in A.P. and their sum is 15. The number obtained by reversing the digits is 594 less than the original number. Find the number.

The mean of a set of numbers is X, If each number is multiplied by z, the mean is

The mean of 8 numbers is 15. If each number is multiplied by 2, then the new mean will be …………….. .

The sum of three numbers in G.P. is 56. If we subtract 1, 7, 21 from these numbers in that order, we obtain an arithmetic progression. Find the numbers.

Find four number in an A.P. whose sum is 20 and sum of their squares is 120.

Three numbers are in G.P. if we double the middle term, we get an A.P. Then the common ratio of G.P equals

Three numbers a, b and c will be in A.P. if and only if ____.