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Please help me With 59 Question.please explain it clearly. Hope my doubt will be solved. Thanking for helping me.

Dv nagaraju , 6 Years ago
Grade 12th pass
anser 1 Answers
Saurabh Koranglekar
Dear student

If you solve terms you will get a pattern

15+14+13........1
n*(n+1)/2
15*8
= 120

Regards
Last Activity: 6 Years ago
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