3. The difference between the greatest and the smallest 5-digit numbers, formed by the digits 0.3, 6, 7 and 9 without repeti- tion, is : (A) 93951 (B) 67061 (C) 66951 (D) 60840
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Step-by-step explanation:
the greatest 5 digit number formed by digits0,3,6,7,9 is 97630
the smallest 5 digit number formed by digits 0,3,6,7,9 is 30679
difference between greatest and smallest digit =97630-30679
=66951
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