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Permutation

In how many w...

Question

In how many ways $2$ students can be chosen from a class of $15$ students?

A

105

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B

91

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C

13

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D

2

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Solution

The correct option is A $105$
Total number of students $= 15$
Number of student to be selected $= 2$
Therefore Possiblities $=^{15} C_{2}$
$= \frac{15 \times 14}{1 \times 2} = 105$

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