Which 2 digit number is equal to twice the sum of its digit?
Table of Contents
- 1 Which 2 digit number is equal to twice the sum of its digit?
- 2 Which 2 digit numbers are equal to the sum of their digits added to the product of their digits?
- 3 How many two digit numbers exist such that it is equal to the multiple of sum of the digits?
- 4 How many two digit numbers are there having only three factors?
- 5 How do you find an even 2-digit number?
- 6 How many 2 digit numbers are two times the sum of its digits?
Which 2 digit number is equal to twice the sum of its digit?
So the only positive TWO-DIGIT integer that is exactly twice the sum of its digits is 18.
Which 2 digit numbers are equal to the sum of their digits added to the product of their digits?
Two-digit numbers which are equal to the product of their digits plus the sum of their digits: 19, 29, 39, 49, 59, 69, 79, 89, 99. 19,29,39,49,59,69,79,89,99.
How many two digit numbers exist such that it is equal to the multiple of sum of the digits?
So all of 19, 29, 39, 49, 59, 69, 79, 89 and 99 qualify. The answer is 9 two-digit numbers. “Civilization advances by extending the number of important operations which we can perform without thinking of them.”
Are two digit number is such that the sum of its digit is thrice the difference of its digits how many such numbers are possible?
84 is a two digit number such that the sum of its digits is thrice the difference of its digits.
How many 2 digit crazy numbers exist?
A crazy number is a number where the magnitude of its consecutive digits differ by 1. The total number of 2 digit crazy numbers is 17. You can notice that in all the numbers the digits differ only by 1. Similarly for three digit numbers the count reaches 32.
How many two digit numbers are there having only three factors?
25 and 49 are the only two digit numbers which will have exactly three factors.
How do you find an even 2-digit number?
A 2-digit number, xy can be expressed as 10*x + y. The sum of the digits is x + y. So, we seek an even 2-digit number, 10*x + y = 2* (x + y). 8*x = y. Since both x and y are single digits, and x cannot be 0, only x = 1 is valid.
How many 2 digit numbers are two times the sum of its digits?
No 2 digit number larger than 36 can be two times the sum of its digits (or less) as 2* (9+9)=36. This simplfies the search. Result: 18.
What is the tens digit of a two-digit number?
What’s the n… The tens digit of a two-digit number is twice its ones digit. If two is added to the number, the digits of the new number so formed become equ… A two-digit number is four times the sum of its digits.
What two numbers can be 3 digit numbers?
We can rule out 12 and 2 and 24 and 1, because those would yield a 3 digit number. We also know that the last digit must be even, since 8 is even. 3 and 8?