Question

if an = ( n+4)(n+5)(n+6),then S10=

Answer 1

n=1

a=(5)(6)(7)

a=210

n=10

a10=3360

Sn=n/2[a+an]

S10=10/2[210+3360]

=5[3570]

=17850

Answer 2

Answer:

I hope it helpful I think u r 9th class of sri chaitanya school