Question

# The lock of a suitcase is 3 digit number. The owner of the suitcase has forgotten the digit at unit's place. If the digit is an even number, then the number of favorable outcomes for units place are:

A

2

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B

4

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C

5

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D

10

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Solution

## The correct option is C 5 Total number of possible outcomes are 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. ⇒ Sample space = S {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} For the number to be even the digit at one's place should be an even number. The favourable outcomes are 0, 2, 4, 6 and 8. Thus the number of favourable outcomes are 5.

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