Kate is a very curious student, she had something in mind and so she asked Maggie to write the numbers according to the following statements and give the result:
1. Write down the largest 3 digit number using single digit prime numbers (digits should not be repeated).
2. Then write down the smallest 3 digit number using single digit prime numbers (digits should not be repeated).
3. Find the difference.
What answer should Maggie get?

528

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518

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988

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428

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Solution

The correct option is B 518
Taking the first statement into consideration, we have to write the largest 3 digit using single digit prime number, it will be 7 5 3
The smallest 3 digit using single digit prime number, it will be 2 3 5
The difference will be obtained when 2 3 5 is subtracted from 7 5 3
7 5 3 - 2 3 5 = 5 1 8.

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