Question

Sum of first 15 terms of 2 + 5 + 8 + .......... is​

Answer 1

Answer:

S

n

=

2

n

×[2a+(n−1)d],

n=15,a=2,d=3,

S

n

=

2

15

×[2×2+(15−1)3],

S

n

=345

Answer 2

Answer:

15

Step-by-step explanation:

Sum of first 15 terms of 2+5+8+

I hope you help full