Question

Find the sum of first 50 term of the arithmetic sequence 2,5,8,11

Answer 1

Answer:

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

=50/2(2*2+(50-1)3)

=25(4+49*3)

=25*151

=3775

Step-by-step explanation:

hope it helps u buddy

Answer 2

Answer-

3,775

Step-by-step explanation:

given,

n=50

a¹=2

a²=5

a²-a¹=d=5-2

d=3

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

S⁵⁰ = 50/2 ((2×2) + (50-1)3)

S⁵⁰ = 25 (4+ 147)

S⁵⁰ = 25×151

S⁵⁰ = 3775