There are 12 intermediate stations on a railway line between 2 stations. The numbers of ways that a train can be made to stop at 4 of these intermediate stations no two of these halting stations being consecutive is

125

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126

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127

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130

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Solution

The correct option is B 126
We need to select 4 intermediate station such that no two of these be consecutive
Required ways $^{(12 - 4 + 1) C_{4}} =$ $^{9} C_{4} = 126$

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There are 12 intermediate stations on a railway line between 2 stations. The numbers of ways that a train can be made to stop at 4 of these intermediate stations no two of these halting stations being consecutive is

The correct option is B 126We need to select 4 intermediate station such that no two of these be consecutiveRequired ways (12−4+1)C4=9C4=126

The correct option is B 126
We need to select 4 intermediate station such that no two of these be consecutive
Required ways $^{(12 - 4 + 1) C_{4}} =$ $^{9} C_{4} = 126$