What 3 different whole numbers give the same result when they are added as when they are multiplied? Hmm... 1,2,3 1 + 2 + 3 = 6 & 1 x 2 x 3 = 6
-7
1, 2 and 3
-17
Prime factors of 56 First, what two numbers multiplied give you 56? 7 x 8 Is either of these a prime number?? Yes, 7 is prime. What about 8? What two numbers multiplied together give you 8? 2 x 4 Is either of these a prime number?? Yes, 2 is prime. What about 4? What two numbers multiplied together give you 4? 2 x 2 Is either of these a prime number?? Yes, both are prime. Combining our individual results, the prime factorisation of 56 is 7 x 2 x 2 x 2
4 and 27
2 x 8 x 108
1 and 216, 2 and 108, 4 and 59
11 and 9
91 and 2
54
44
-78
17 times 2 !
The numbers are: 4 -sq rt of 13 and 4 +sq rt of 13
-52
1 and 82 2 and 41