Question

sum of 40positive integers devisible by 7​

Answer 1

Answer:

y9cycicgixg8xgx8tf8 f8g8og. gcgic

Answer 2

Answer:

5740 is the sum of 40 positive integers divisible by 7.

Step-by-step explanation:

The no. series 7,14,21,28,35,42,49............280.

The first term(a)=7

The common difference(d)=7

The total no. of term=40

S=n/2(a+Tn)

S=40/2 x (7 + 280)

= (40 x 287)/ 2

= 11480/2

=5740

Or,

7 + 14 + 21 + 28 + 35 + 42 + 49 + 56 + 63 + 70 + 77 + .  .  .  .   + 280 = 5740