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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.
Biggest number of 6 digit which is perfect square?
1,0002 = 1,000,000 so 1 less is 9992 = 998,001
How many two-digit numbers have digits whose sum is a perfect square?
To find how many two-digit numbers have digits whose sum is a perfect square, we first note that the two-digit numbers range from 10 to 99. The possible sums of the digits (tens digit (a) and units digit (b)) can range from 1 (1+0) to 18 (9+9). The perfect squares within this range are 1, 4, 9, and 16. Analyzing each case, we find the valid combinations for each perfect square, leading to a total of 36 two-digit numbers whose digits sum to a perfect square.
Is the three-digit number X64 a perfect square?
x64 is not a perfect square any number if it is a 3-digit perfect square and ending with 4 it can be 144,324 ,484 and 784 because the number is ending with 4 but the tens digit is not matching to any of the option so it is not a perfect square
What number has 2 digits the ones digit is odd the tens digit is even the sum of the digits are divisable by 3 the number is a square number?
81
How many two digit numbers have digits whose sum is a perfect square?
69
I am a square number. I am an odd two-digit number. The sum of my digits is a two-digit number. What number am I?
49
Which square of 4 digit number can be used to form the greatest 4 digit number?
Every square of a 4 digit number has more than four digits.
What 2 digit number is the square of the sum of its digits?
81...........
What is a square number a 2 digit number and the product of its digits is 8?
81
What is a three digit number that is a perfect square and perfect cube?
729
Is the different of the smallest three digit number and the smallest two digit number is a perfect square?
No. The smallest 2 digit number is 10 the smallest 3 digit number is 100 - so the question is whether (100-10) is a perfect square? No - 90 is not a perfect square. 8x8 is 64 and 9x9 is 91, not 90.
