Question

Find the sum of the first 24 terms of the list of numbers whose nth term is given by an=3+2n

Answer 1

Answer:

9n.........................................

Answer 2

Answer:

Hence, S24 = 672.

the nth term is an-3+2n so by using this we can find the value of terms like

a1-5,a2=7,a3=9

and a24-51

now the first term is 5 and the last term

is 51 and the difference is 2

by using the formula for sum of n

terms i. e

sn =n/2(2a+(n-1)d)

so s24=24/2(10+23*2) i. e 672 ans.