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Permutations And Combinations

Question
CBSEENMA11014229

A polygon has 7 sides. How many diagonals does it have?

Solution

Solution not provided.
Ans. 14

Some More Questions From Permutations and Combinations Chapter

Determine K, so that K + 2, 4K – 6 and 3K – 2 are three consecutive terms of an A.P.