In an Asoka chakra, the central angle made by the smallest sector,two small sectors, three small sectors and so on are

The sum of (m + n)^th term and (m - n)^th terms of an A.P is equal to twice the

What is the 20^th term of the sequence defined by a_n = (n - 1)(2 - n) (3 + n)?

The Arithmetic mean of (p + q) and (p - q) is

The number of terms of the AP 3, 7, 11, 15, .......... to be taken so that the sum is 406 is.

Which term of the G.P, 2, 8, 32.......... up to n term is 131072?

In an A.P, if the sum of first n terms is S_n = n² P and sum of first m terms is S_m = m²P, where m, n, p are positive integers and m ≠ n then S_p is

The income of a person is 3,00,000 in the first year and he receives an increase of Rs. 10,000 to his income per year for the next 19 years. Then the total amount, he received in 20 years is

If the sum of n terms of an A.P is (Pn + qn²) where p and q are constants. Then the common difference is

There are 15 terms in an A.P. Its first term is 5 and common difference is 3, then its middle term is