1. Factors of 20 = 1, 2, 4, 5, 10, 20. Factors of 30 = 1, 2, 3, 5, 10, 15, 30
There -- the first one is done for you. If you post your answers to the others, we'll be glad to check them.
three of these puzzles have more than one answer. try to find all the possible answers for each puzzle one of these puzzle is impossible.
1.my number is a factor of 20. it's also a factor of 30.
2. my number is a multiple of 10. it's a factor of 45.
3. my number is between 40 and 50. it's a prime.
4. my number is a multiple of 4. it's a square number. it's less than 50.
2 answers
2.) 1,9,5, 45
3.) 41, 43 &47
4.) 16
3.) 41, 43 &47
4.) 16