Find the number of 2 lettered words, with or without meaning, that can be formed out of the letters of the word TIME, where the repetition of the letters (a) is not allowed (b) is allowed.

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Solution

TIME
$(1)$ Repetition is not allowed

Number of ways $= 4 \times 3 = 12$
$12$ words are possible.
$(2)$ Repetition is allowed

Number of ways $= 4 \times 4 = 16$

$16$ words are possible.

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Find the number of 2 lettered words, with or without meaning, that can be formed out of the letters of the word TIME, where the repetition of the letters (a) is not allowed (b) is allowed.

TIME(1) Repetition is not allowedNumber of ways=4×3=1212 words are possible.(2) Repetition is allowedNumber of ways =4×4=1616 words are possible.

TIME
$(1)$ Repetition is not allowed

Number of ways $= 4 \times 3 = 12$
$12$ words are possible.
$(2)$ Repetition is allowed

Number of ways $= 4 \times 4 = 16$

$16$ words are possible.