Question

At the end of a conference, the ten people present all shakehands with each other once. How many shakehands will there be altogether

• A. 20
• B. 45
• C. 55
• D. 90

Answer 1

Answer:

B. 45

Read Explanation:

No of shakehands = n(n-1)/2 = (10x9)/2 =45

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