They are: 3*5*7 = 105
315
210
105 is not a prime number, as it's factors are: 1, 3, 5, 7, 15, 21, 35, 105.
You multiply the one digit number on the bottom to every number on the top starting at the right and so on with every other number on the bottom.
They are: 3*5*7 = 105
315
210
3 x 5 x 7 = 105
3 x 5 x 7
The answer is 105 because 3,5, and 7 are all prime factors and when you multiply the numbers together it comes out to be 105 witch is lower than 160 and is an odd number.
210
105First multiply 1 and 3 to get 3. Second multiply 3 and 5 to get 15. Third multiply 15 and 7 to get 105.
315
630
The factor pairs of 105 are: 1 x 105 3 x 35 5 x 21 7 x 15
34