Question

find the sum of the AP 2,7,12_____upto 10 terms​

Answer 1

225

Step-by-step explanation:

a=2

d=5

n=10

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

S10=10/2{2×2+(10-1)5}

=5(4+45)

=225

Please mark as BRAINLIEST

Answer 2

sum of the AP

→

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

Sn = 10/2[2×2+(10-1)×5]

Sn = 5×49

Sn = 245