What is the largest possible two-digit number by which 2179782 can be divided?a) 88b) 132c) 66d) 99

The largest possible two-digit number by which 2179782 can be divided is 99 (option d).

Here's the step-by-step process:

1. Check each option to see if 2179782 can be divided by it without leaving a remainder.
2. Start with the largest number. In this case, it's 132, but it's not a two-digit number, so we move to the next largest number, which is 99.
3. Divide 2179782 by 99. If the remainder is 0, then 99 is the largest two-digit number that can divide 2179782. If not, move to the next largest number and repeat the process.
4. In this case, 2179782 divided by 99 equals 22018 with no remainder, so 99 is the largest two-digit number that can divide 2179782.