Question

Without adding find the sum of 11+13 +15+17+19+21+23+25+27+29=

Answer 1

Answer:

To find the sum of

11+13 +15+17+19+21+23+25+27+29= ?

It is an AP

given , first term, a= 11.

Last term l = 29

d. = 13-11= 15-17= 19-17=2

hence d. = 2

n. = 10

we know that sum = n/ 2 ( a+l)

= 10 /2 ( 11+29)

Answer =. 200.

(same answer comes if we add )

Answer 2

answer is 200 Mark me as Brainlist✌✌