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ഒരു മീറ്റിങ്ങിൽ പങ്കെടുത്ത 10 ആളുകൾ പരസ്പരം ഹസ്തദാനം ചെയ്താൽ ആകെ എത്ര ഹസ്തദാനം?

A45

B50

C100

D90

Answer:

A. 45

Read Explanation:

ഹസ്തദാനം=n(n-1)/2 =(10*9)/2 =45


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