How many two digit positive integers m have the property that the sum of m and the number obtained by reversing the order of the digits is a perfect square?

There are 8 integers who have the property.

When the digits of two digit positive integer m are reversed the result?

When the digits of two-digit, positive integer M are reversed, the result is the two-digit, positive integer N.

How many 2 digit positive integers are there with the property that the sum of the integers digits equals the product of those digits?

if 3 · 8 = 24 , then sure enough 8 · 3 = 24 too. So for the two pairs of integers ( 3 and 8 , along with 4 and 6 ), the two-digit positive integers whose product of their digits is 24 are: 38 , 83 , 46 , and 64 . Since we have four different two-digit integers, the correct answer is C, Four.

When the digits of a two digit number are reversed the number increases by 27 sum of the least and the highest such two digit numbers is single choice?

Unlock Let the digits of the number we need to find be ab. So the number is 10*a + b. The digits are reversed when 27 is added to it. Therefore for all the numbers 14 , 25 , 36 , 47 , 58 and 69 the digits are reversed when 27 is added.

How many 2 digit positive perfect squares are there?

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 2-digit positive integers are there such that their product is 24?

There are four 2-digit positive integers whose product of the two digits is 24 (38, 46, 64, and 83).

How many positive 2-digit numbers are there?

There are 20 positive, two-digit numbers that meet the requirements. They are: 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99. There are 20 integers which meet these criteria. Not including single-digit integers prefixed with a 0, there are 90 possible two-digit integers.

How do you reverse a 2 digit number?

Where reverse is a variable representing the reverse of number.

1. Step 1 — Isolate the last digit in number. lastDigit = number \% 10.
2. Step 2 — Append lastDigit to reverse. reverse = (reverse * 10) + lastDigit.
3. Step 3-Remove last digit from number. number = number / 10.
4. Iterate this process. while (number > 0)

What does it mean when digits are reversed?

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.

How many 2 digit perfect square numbers are there whose units digit is a perfect cube?

One way is to list out all the square numbers with two digits: 16, 25, 36, 49, 64, 81. Then list out all the cube numbers with two digits: 27, 64. The answer is the only number in both lists: 64.

How many positive two-digit monotonic integers are there?

Then as there is one decreasing monotonous number for every increasing monotonous number, I multiplied it by 2 to get 90 total 2-digit monotonous numbers.