Which of the following is a reasonable estimated answer to the following problem? 989,867 ÷ 999

990 would be a reasonable guess because you would round 989,867 up to 990,000 and divide that by the number you rounded 999 to (the number your round 999 to would be 1,000) by dividing 990,000 by 1,000 you get 990

31 is prime. and it’s prime factorization is just 31.

These are the multiples of 15 but what you are probably asking or what are the factors of 15