Sum of AP members

Find the sum of all the numbers between 8 and 258 that are divisible by 5.

Correct answer:

s =  6625

Step-by-step explanation:

 8 < a < b < 258 a=10 b=255  n=(ba)/5+1=(25510)/5+1=50  s=2a+b n=210+255 50=6625



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