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10(10C) Voluntary retirement scheme Exemption rule

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1. Arrange the 

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In an A.P., if common differance is 2, sum to n term is 49,7th term is 13, then n=

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Find ques from 21to 25 of chapter3 ,ex.3.3 in class 11 maths N.C.E.R.T.

1. Mathematics.pdf

Ho does the minus ign comes up?? For example.. 13/-1. The answer will come -13... Why????

Find the area of triangle whose vertices are( 1, 0)( 6,0 )(4,3)