Question
Form the greatest and the smallest 4 digit numbers using the given digits without repetition 6, 1, 4 and 9.
✓
Answer
The digits are given : 6, 1, 4 and 9
(a) The greatest 4-digit number = 9641
(b) and the smallest 4-digit number = 1469
(a) The greatest 4-digit number = 9641
(b) and the smallest 4-digit number = 1469
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