# What number is an even number a square number has 2 digits 9 factors and has a digit sum of 9?

it is 36!!! because,,, # 3+6=9 # 6x6=36 # factors are: 1 2 3 4 6 9 12 18 36= 9 factors # 36= an even number it all works so the answer is 36!

### What is the largest 3-digit number that only has 2 and 5 as prime factors?

The only number that ONLY has two and five as factors is 10, which has two digits, so there are no numbers that are three digits long and ONLY have two and five for factors. However, if you are asking what the largest three digit number that has two and five for factors, it would be the largest three digit number with ten as a factor, as ten the the LCM of two and five…

### What is a unit digit?

A number is made up from digits in the numeral system. We often use the decimal system in which we use 10 digits, In writing the any number, many digits are used, even repitation of digits. when we write any number using the digits, the last digit ( from right side ) in that number is called unit digit. for example in the number 9814868980, here 0 is called unit digit.

### The largest 12- digit numbers where repeated digits are allowed?

If repeated digits are allowed, then the largest 12-digit number is 999,999,999,999 . If repeated digits are not allowed, then the largest 12-digit number is 989,898,989,898 . If the same digit can't be used more than once, then the largest possible number has only 10 digits. The number is 9,876,543,210 .

### How do you find the squareroot of a number?

Ignore the last two digits of the number called out by the spectator and choose the memorised square which is just lower (or equal) to the remaining number. The corresponding square root is the first digit. of your answer Now consider the last digit of the number called out by the spectator. If this is 0 or 5, then you immediately know that the last digit of your answer is also 0 or 5. In…