Use all the digits 4, 5, 7, 8 to form(a) the greatest number which is a multiple of 5(b) the smallest number between 5000 and 6000Ans: (a) (b)
Question
Use all the digits 4, 5, 7, 8 to form(a) the greatest number which is a multiple of 5(b) the smallest number between 5000 and 6000Ans: (a) (b)
Solution
(a) To form the greatest number which is a multiple of 5, we need to arrange the digits in such a way that the number is as large as possible and ends with 5 (since all multiples of 5 end with 0 or 5). The largest digit is 8, so it should be the first digit. The next largest digits are 7 and 4, and since we need to save the
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