It is 99.
99*99 = 9801
10 10 x 10 = 100
The largest 3-digit number - not itself a perfect square - is 999. Calculate its square root, round the answer down, then square the answer again.
No. There's no two digit numbers that could do this. The largest two digit number is 99. If you add 99 to itself, you only get 198, which is much smaller than a four digit number.
999 is the largest 3-digit number.
what is the largest 4-digit number you can make
10 10 x 10 = 100
32
The number is 45
27
32 is the smallest two-digit number that can be multiplied by itself to give a four-digit number. (32x32)=1024
35*35 = 1225
731 and 137
1111x9 =9999 1089 multiplied by 9 = 9801
The largest 3-digit number - not itself a perfect square - is 999. Calculate its square root, round the answer down, then square the answer again.
The largest single digit composite number is 9. The largest prime number is 17 million digits long. The definition of a composite number is any number that has at least one positive divisor other than one or the number itself (it is not a prime number). The largest composite digit is therefore longer than the largest prime number by at leaf +1.
2 digit number
No. There's no two digit numbers that could do this. The largest two digit number is 99. If you add 99 to itself, you only get 198, which is much smaller than a four digit number.