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Combination

Out of 8 give...

Question

Out of 8 given points, 3 are collinear. How many different straight lines can be drawn by joining any two points from those 8 points?

A

26

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B

28

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C

27

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D

25

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Solution

The correct option is D $26$
Required number of straight lines
$^{8} C_{2} -^{3} C_{2} + 1$
$= 26$

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