How many 2 digit numbers are there with sum of digits equal to 10?

Description for Correct answer: Let the two-digit number be 10x + y. Therefore, Required number is 73.

What is the reverse of a two digit number?

We know that to reverse a number, we should swap the numbers in TENS and ONES position. Therefore, the general form of its reverse ‘ba’ is (10 \times b) + a. Let us try to find the sum of both these numbers. Therefore, the sum of two-digit numbers and their reverse is always a multiple of 11.

When you reverse the digits in a certain two digit number you decrease its value by 54 find the number if the sum of its digits is 10?

1 Expert Answer Use X and Y for the digits, with X being the “tens” digit. We’re also told that reversing the digits decreases the value by 54. Therefor, the number is 60.

How many two digit numbers have digits whose sum is a perfect square?

17 two-digit numbers
So, there are 17 two-digit numbers whose sum of digits is a perfect square. Note: Perfect squares are those numbers which are formed when any number is multiplied by itself.

How many numbers are there between 99 and 999?

the correct answer is 162.

What are reverse numbers?

Reversible numbers, or more specifically pairs of reversible numbers, are whole numbers in which the digits of one number are the reverse of the digits in another number, for example, 2847 and 7482 form a reversible pair.

When a 2-digit number is reversed and added to the original number the result is divisible by 13 how many such numbers are possible?

For simplicity, 11*(x+y). Now, we can clearly notice that 11 is not divisible by 13, so the number x+y must be divisible by 13. Therefore, there are six such possible numbers.

When you reverse the digits in a certain two digit number you decrease its value by 36 find thenumber if the sum of its digits is 4?

The number is 95. Note that 95-59=36.