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How Many 3-digit Numbers Can Be Formed From The Digits 2,3,5,6,7 And 9 Which Are Divisible By 5 And None Of The Digit Is Repeated.? |
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Answer» As the NUMBER is divisible by 5, the unit digit of 3-digit number MUST be 5. Rest TWO digits can be selected in 5c1 * 4c1 = 20 ways. As the number is divisible by 5, the unit digit of 3-digit number must be 5. Rest two digits can be selected in 5c1 * 4c1 = 20 ways. |
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