Question

Find the sum of first 50 multiples of 3

Answer 1

Answer:

Step-by-step explanation:

A. P. - 3,6,9,12,...............to 50th term

Here,

a- 3 n-50 an-? S50-?

1st use

an = a + (n-1) d

Then,

Sn = n/2[a+an]