Question

Find the sum of the following APs: 2,7,12 to 10 terms.

Answer 1

le Bhai tera answer........

Answer 2

Answer:

245

Step-by-step explanation:

Here,

a=2, d=7-5=2, n=10

Now,

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

S10 = 10/2 [2×2+(10-1)5]

= 5[4+45]

= 20+225

= 245

I hope this will help you!