CBSE Class 10 Answered
plz ans ........
Asked by nikitakoolkarni | 27 Feb, 2010, 12:32: PM
Expert Answer
the c.d of this A.P. is 12
so to have a term 120 more than the 15th term, we use
120=12 x 10.
so 10 terms after the 15 th term, will be the term which is 120 more than the 15th term.
cross check :not part of the solution.
a=5
d=12
15th term=a+14d=5+168=173
15th term+120=173+120=293
25th term=a+24d=5+288=293
Answered by | 27 Feb, 2010, 02:26: PM
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