Q: The sum of the digits of a two-digit number is 12 If the digits are interchanged the number is increased by 54 What is the original number?

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One way of doing this is through trial and error. Choose a random number where the digits add up to 14. There isn't that many, the numbers are:59 and 68. 5+9= 14. However 95 -59 is 36, twice as much as 18. 6+8=14. And 86-68 is 18. So the number is 68.

The answer is 418. You are copying a MathCounts problem.

Possibility of two digit no whose sum is 17 89 and 98 Reverse of 89 is 98. 98 is 9 less than the original no 89. 89 is original no

A) If a number has two digits, then the sum of its digits is less than the value of the original two-digit number.

The number you are looking for is 12. Reversing the digits gives you 21 75% of 12 is 9 12 + 9 = 21

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63

Any two digit number in which: (a) the units digit is not 0, and (b) the two digits are different will form a new 2-digit number when the digits are interchanged.

There are four pair of mirror primes.

52 years old

472.

47 Impossible problem!

One way of doing this is through trial and error. Choose a random number where the digits add up to 14. There isn't that many, the numbers are:59 and 68. 5+9= 14. However 95 -59 is 36, twice as much as 18. 6+8=14. And 86-68 is 18. So the number is 68.

49 ( + 45 = 94)

The answer is 418. You are copying a MathCounts problem.

Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.Since the sum of the digits is divisible by 3, the original number is also divisible by 3.

It is another whole number.

Possibility of two digit no whose sum is 17 89 and 98 Reverse of 89 is 98. 98 is 9 less than the original no 89. 89 is original no