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Subject :IMO    Class : Class 5

How much greater is the smallest 5-digit number with all different digits than the largest 4-digit number with all different digits?

A2469
B88889
C358
D2464


Ans 1:

Class : Class 5
C

Ans 2:

Class : Class 7

Ans 3:

Class : Class 5
Should be AA

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