Question

hi..find the sun of first 24 terms of the list of numbers whose nth term given by an=3+2n...i need with every steps..dont know don't ans​

Answer 1

Hey MATE!!!

Let us find the 1st and last term of the AP and then we can apply the given formula to find the sum of 1st 24 terms:

A1 = 3 + 2(1) = 5

A24 = 3 + 2(24) = 51

Now sum of these terms is given by :

Sn = n/2 [1st term + last tem]

=> 24/2 [5 + 51]

=> 12 (56)

=> 672 Answer

Hope it helps

#Follow mE!! :))