If the sum of four numbers in A.P is 24 and the sum of their squares 164, then those numbers are

If the sum of the series 24, 20, 16, …………… is 60, then the number of terms is 

72 + 70 + 68 + ……………. + 40=

If d = 2 and 8th term of an A.P is 15, then the sum of 15 terms is ………

If the sum of n terms of an A.P is $4n^{2}4n^2$ + 5n, then common difference is

If $5^{th}5^\{th\}$ term of a G.P is 32 and common ratio 2, then the sum of 14 terms is

The sum of even numbers between 100, 200 is

Arithmetic mean of $\frac{1}{2}\backslash frac\{1\}\{2\}$ and $\frac{1}{3}\backslash frac\{1\}\{3\}$ is

One of the four A.M’s between 3, 23 is …………

The product of two numbers is 91 and their arithmetic mean is 10 then the two numbers are