Question

Find the sum of first 50 common terms of 12 16 20

Answer 1

Answer:

5500

Step-by-step explanation:

a = 12

d = 4

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

S50 = 50/2 (2(12) + (50 - 1)4)

= 25 ( 24 + 49(4))

= 25 (24 + 196)

= 25 × 220

= 5500

hope you get your answer