Question

Find the sum of the A.P. 2, 7, 12, .......... to 10 terms.​

Answer 1

Step-by-step explanation:

a=2

d=5

n=10

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

S10=10/2(4+( 10-1)5)

=5(4+45)

=5×49

=245

Answer 2

Answer:

a = 2

d= 7-2=5

S10=10/2*(4+(10-1)5)

=5(4+45)

=5(50)

=250

Hope it helps you..

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