Algebra

JEE Main level, single correct, medium

5 of 6

Question 5 of 6

In a party of 10 people, if each person shakes hands with every other person exactly once, the total number of handshakes is:

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Answer: (A) 45

Number of handshakes =10C2=10×92=45= ^{10}C_2 = \frac{10 \times 9}{2} = 45.

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