[" Find the ressitance "],[15],[" is "],[" N'N "]

If a 5N and a 15 N forces are acting opposite to one another . Find the resultant force and the direction of action of the resultant force

The sum of first n terms of an AP is (3n^2+6n) Find the n^(th) term and 15^(th) terms of the AP

The sum of n terms of an A.P.is 3n^(2)+5n. Find the A.P.Hence find its 15 th term.

Find the values of the following: t a n 15^0 ii. t a n 75^0

Find the sum to n terms of a series is 7n^2-5n . Show that it is an AP and find the 15^th term.

Find the remainder when 1!+2!+3!+4!+...+n! is divided by 15, if n>=5

Find the sum of n terms of series : 3 + 5 + 9 + 15 + 23 + ………… n terms

Find the remainder when sum_(r=1)^(n)r! is divided by 15 , if n ge5 .