The largest two-digit even number is 98. In the decimal system, each digit can range from 0 to 9, but for a two-digit number, the first digit cannot be zero. Since we are looking for an even number, the last digit must be an even number, which leaves us with 0, 2, 4, 6, or 8. Among these options, 8 is the largest even digit, resulting in 98 as the largest two-digit even number.
679 is the product of the largest single-digit prime number and the largest two-digit prime number.
There can only be one largest two-digit prime number.
99
73 is the largest two-digit number that is prime and has prime numbers for both of its digits.
25
How about 89
269
50 - 25 = 25
99*99=9801
Subtract 25 from 50.
86
They are: 83, 89 and 97