Question

Find the sum of first 24 term of the app 5,8,11,24.....

Answer 1

Answer:

948

Step-by-step explanation:

n = 24, a = 5, d = 3,

Sn = n/2 [2a+(n-1)d]

--> S24 = 24/2 [2×5+(24-1)×3]

--> S24 = 12 (10+23×3)

--> S24 = 12 (10+69)

--> S24 = 12 × 79

--> S24 = 948

Therefore, the sum of first 24 terms of the AP is 948