How many two digit numbers be generated using the digits $0, 1, 2, 3, 4$ without repeating any digit?

16

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20

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12

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18

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Solution

The correct option is C $16$
Digits are $0, 1, 2, 3, 4$
Two digit number - -
First place can be filled in by $4$ ways except $0$
and the second place can be filled by remaining $4$ digits.
Total number of ways $= 4 \times 4 = 16$

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How many two digit numbers be generated using the digits 0,1,2,3,4 without repeating any digit?

The correct option is C 16Digits are 0,1,2,3,4Two digit number - -First place can be filled in by 4 ways except 0and the second place can be filled by remaining 4 digits.Total number of ways =4×4=16

How many two digit numbers be generated using the digits $0, 1, 2, 3, 4$ without repeating any digit?

The correct option is C $16$
Digits are $0, 1, 2, 3, 4$
Two digit number - -
First place can be filled in by $4$ ways except $0$
and the second place can be filled by remaining $4$ digits.
Total number of ways $= 4 \times 4 = 16$