Same chapter3 marksDifficulty: Medium
How many distinct arrangements can be made of the letters of the word ALLAHABAD?
Permutations and Combinations
3 marksDifficulty: Medium
How many diagonals does a decagon have?
Original Khojo Papers practice question — not from a past board paper.
Answer
35
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A polygon of n sides has n(n − 3)/2 diagonals, so for n = 10 the number is 10 × 7 ÷ 2 = 35.
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