Formula for Sum of n Terms of an AP
If a and d are the first term and the common difference of an AP, Sn denotes the sum to n terms of an AP. If Sn=Pn+Qn2, what are P and Q?
a = P + Q ; d = Q/2
a = P + Q ; d = Q
a = P - Q ; d = 2Q
a = P + Q ; d = 2Q
Find the sum of first 24 terms of an AP whose nth term is given by an=3+2n.
Find the sum of 20 terms of the A.P. 1, 4, 7, 10, ......
- p - q
- p + q
- -(p + q)
What is the sum to n terms of the following series: 2, 4, 6, 8, …, ( nth term)?
Find the sum of all odd numbers between 0 and 50.
A spiral is made up of successive semicircles, with centers alternatively at A and B, starting with center at A, of radii 0.5 cm, 1.0 cm, 1.5 cm, 2.0 cm, ... What is the total length of such a spiral made up of thirteen consecutive semicircles?
Find the sum : 34 + 32 + 30 + .... + 10
Find the difference between the sum of first 100 natural numbers and the sum of even numbers from 1 to 100.