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The number of 3 letter words that can be formed from the letters of the word ‘NUMBER’ when the repetition is allowed are:

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The number of 3 letter words that can be formed from the letters of the word ‘NUMBER’ when the repetition is allowed are:

(a) 206 

(b) 133 

(c) 216 

(d) 300

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1 Answer

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(c) 216

Number of letters in NUMBER is 5 

From 5 letters we can form 3 letter ways = 6 x 6 x 6 = 216.

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