Number System
The sum of the digits of a two-digit number is 15 and the difference between the digits is 3. What is the two-digit number?

96
78
Cannot be determined
69

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Number System
In a two-digit number, if it is known that its unit's digit exceeds its ten's digit by 2 and that the product of the given number and the sum of its digits is equal to 144, then the number is:

26
46
24
42

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Number System
The difference between a two-digit number and the number obtained by interchanging the digit is 36. What is the difference between the sum and the difference of the digits of the number if the ratio b

8
None of these
16
4

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