# of the day 17, and 16

16 - you have to find out if the number is divisible by either 2,3,4,5,6,8,9.

first only look at the whole number, ignore the decimals

eg.9839

now go through divisibility rules for 2,3,4,5,6,8,9.

17 - Make a two digit number using the ones place (first) tens place (second)

eg.4524

24 is the number, first find all the factors of 24 then determine which ones are prime

24 - 1,2,3,4,6,8,12,24.

prime factors - 2,3.