Please solve the sum.

Asked by sunil_0010 | 1st Jul, 2009, 10:41: PM

Expert Answer:

for this A.P.,

 a=first erm=7 yrs

d=common diff=3 months=1/4 yrs

let there be n students

So sum of their ages




so solving we get,





Answered by  | 1st Jul, 2009, 11:01: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.