Question

Find the difference between minimum and maximum value

Q: Answer-Find the difference between minimum and maximum value of 'd' such that '7d5289' is always divisible...

A number is divisible by 3 when the sum of its digits is divisible by 3. Sum of digits of 7d5289 7 d 5 2 8 9 d 31. So, d 31 should be divisible by 3. Possible values of d 2, 5, 8 Minimum value of d 2 Maximum value of d 8 Required difference 8 2 6

of 'd' such that '7d5289' is always divisible by 3.

A 6

B 8

C 9

D 5

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Find the difference between minimum and maximum value

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