Question

find the su. of 2,7,12......to 10 terms​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Step-by-step explanation:

Here, First term

(a) = 2,

defference

(d) = 7-2= 12 -7= 5

and number of term

n= 10

Sum of n

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

10/2[2×2+(10-1)×5]

5[4+9×5]

5 (4+45)

5×49

245 = Ans.

I hope it will Help you.