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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?
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Verified Answer
The correct answer is:
26
Required number of straight lines
$$
={ }^{8} C_{2}-{ }^{3} C_{2}+1=26
$$
$$
={ }^{8} C_{2}-{ }^{3} C_{2}+1=26
$$
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