CMAT 2015 Solved Question Paper

Question : 21 of 100

Marks: +1, -0

How many 4 letters can be formed by taking letters from the word ‘PARNECIOUS’ such that atleast one letter is repeated?

Solution:

(c) Given word → PARNECIOUS
Number of different letters in the given word = 10
∴ Required number of letter formed when atleast one is repeated =

10^4

= 10000

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