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Question 1052554: Each member of a club writes greeting cards to other members.the total no of greeting cards is 110. find the no of members.?
Answer by ikleyn(52792)   (Show Source):
You can put this solution on YOUR website! .
Each member of a club writes greeting cards to other members.the total no of greeting cards is 110. find the no of members.?
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Let the number of members be "n", where n is an integer now unknown.
Then each member writes to (n-1) others.
Hence, the total number of greeting cards is n*(n-1).
The equation is
n*(n-1) = 110.
The solution is n = 11.
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