Eight straight lines are drawn in the plane such that no two lines are parallel and no three lines are concurrent. The number of parts into which these lines divide the plane is:

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Solution

The correct option is B 37
Required number of parts = $1 + \sum_{r = 1}^{8} r$
$= 1 + \frac{8 \times 9}{2} = 37$

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Eight straight lines are drawn in the plane such that no two lines are parallel and no three lines are concurrent. The number of parts into which these lines divide the plane is:

The correct option is B 37Required number of parts = 1+∑8r=1r =1+8×92=37

The correct option is B 37
Required number of parts = $1 + \sum_{r = 1}^{8} r$
$= 1 + \frac{8 \times 9}{2} = 37$