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If 4-digit numbers greater than 5,000 ar...

If 4-digit numbers greater than 5,000 are randomly formed from the digits 0, 1, 3, 5. and 7. what is the probability of forming a number divisible by 5 when, (i) the digits are repeated? (ii) the repetition of digits is not allowed?

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The correct Answer is:
(i)`2/5` (ii) `3/8`
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