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Subject :IMO    Class : Class 4

The greatest four digit number that can be formed by using the digits 3, 5 and 0 (using each digit at least once) when multiplied by 15 gives _________.


Your answer is wrong.bcoz no allowed.mention in question.but u done with reapat

Ans 1:

Class : Class 5
You have wrong you have.told that (using one digit at least once)but you have used 5 double time

Ans 2:

Class : Class 4
you should use the number atleast once. so the greatest no u can make from the numbers provided is 5530. then multiply it with 15. you get the answer.

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