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What else can I help you with?
A perfect square if the digits sum is 4?
No. Think 13, 22, 31 for a start!
How many of the numbers from 10 through 89 have the sum of their digits equal to a perfect square?
The sum of the digits in '89' is 17, so I don't need toworry about any perfect square bigger than 16.1: 104: 13, 22, 31, 409: 18, 27, 36, 45, 54, 63, 72, 8116: 79That's 14 of them .
How can you calculate for a two digit square number whose sum of digits is 13?
I did it by trial and error. 7^2 is 49. 4 + 9 = 13
What is a prime number that has two digits and the sum of the digits is 14?
13
What is the smallest positive multiple of 13 for which the sum of its digits is prime?
Start with the smallest multiple of 13 and continue with the next smallest until finding one that fits the specifications. 13, sum of digits is 1 + 3 = 4 which is not prime 26, sum of digits is 2 + 6 = 8 which is not prime 39, sum of digits is 3 + 9 = 12 which is not prime 52, sum of digits is 5 + 2 = 7 which is prime So, 52 is the smallest positive multiple of 13 for which the sum of its digits is prime.
How many 2 digits numbers are such that the difference of the number and the number with the digits reversed is a perfect square?
If the number with the digits reversed can have a leading 0 so that it is a 1-digit number, then 16. Otherwise 13.
What is the sum of the digits 6 2 and 5?
13
How many numbers 10 through 87 have the sum of their digits equal to a perfect square?
Numbers whose digits add to a perfect square between 10 and 87 are: 10 = 1 + 0 = 1 = 12 13 = 1 + 3 = 4 = 22 18 = 1 + 8 = 9 = 32 22 = 2 + 2 = 4 = 22 27 = 2 + 7 = 9 = 32 31 = 3 + 1 = 4 = 22 36 = 3 + 6 = 9 = 32 40 = 4 + 0 = 4 = 22 45 = 4 + 5 = 9 = 32 54 = 5 + 4 = 9 = 32 63 = 6 + 3 = 9 = 32 72 = 7 + 2 = 9 = 32 81 = 8 + 1 = 9 = 32 This is a total of 13 numbers.* * * * *And also79 = 7 + 9 = 16 = 42So a total of 14 numbers.
What number has two digits and has the factor 13 and the sum of the digits of the number is 11?
65
Why is the number 65 have 13 as a factor and is the sum of the digits of the number is 11?
65 has 13 as a factor because 13 divides into 65 evenly with no remainder. The sum of the digits of 65 is 11 because 6 + 5 = 11
What number has two digits has 13 as a factor and the sum of the digits of the number is 11?
65
What two digits have the sum of 13 and a product of 12?
1 and 12
