\ 210
(d) none of these
12. The number of straight lines obtained by joining 16 points on a plane, no three of them
being on the same line is
(a) 120
(b) 110
(d) none of these
(c) 210
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The no of a straight line by joining 16points on a plane ,no.twice of them being on the same
Each pair of points determine a line
16C2 = (16*15)/(1*2) = 8*15 = 120
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