How many arrangements of the letters of the word EQUATION begin with a vowel?
Permutations and Combinations
Original Khojo Papers practice question — not from a past board paper.
5P3 = 60 and 5C3 = 10
No citable source has been recorded for this record. Treat it as practice material, not as fact.
nPr = n!/(n − r)! = 120/2 = 60, and nCr = nPr/r! = 60/6 = 10.
From the same topic and chapter, at a similar level.
How many arrangements of the letters of the word EQUATION begin with a vowel?
Permutations and Combinations
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Permutations and Combinations
How many different arrangements can be made of the letters of the word APPLE?
Permutations and Combinations
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Permutations and Combinations
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Permutations and Combinations