self Maths Puzzle

Find the sum of all 3-digit nos. formed using the digits 2, 3, 5, 7 & 8.

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self Other Question

the no of prime factor of (30)^7*(22)^5*(34)^11....
a)540,b)577,c)576,d)583 Find the greatest number of five digits, which is exactly divisible by 7, 10, 15, 21 and 28.