doubt

Asked by akhileshnarayanan | 20th Feb, 2010, 09:44: PM

Expert Answer:

a7 = a0 + 6d

a11 = a0 + 10d

a7 = 11a11

a0 + 6d = 11(a0 + 10d)

10a0 + 104d = 0

a18 = a0 + 17d

10a18 = 10a0 + 170d

= 10a0 + 104d + 66d 

= 0 + 66d

= 66d

0

Such an AP can't exists. Please verify the query description if it's what you meant.

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Answered by  | 21st Feb, 2010, 05:32: AM

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