Question

Find S10 if a=6 and d=3​

Answer 1

Sn= a +(n-1)d
S10= 6 +(10-1)3
S10=6+27
S10= 33

Answer 2

ANSWER

If a=6

d=3

S10=a+9d

=6+(9)3

=6+27

=33

S10=33

thanks