The only factor they have in common is the number 1.
The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42 The factors of 31 are: 1, 31
The prime numbers between 30 and 50 are 31, 37, 42, 43 and 47.
42
Their only common factor is 1.
5 (+5=) 10 (+6=) 16 (+7=) 23 (+8=) 31 (+9=) 40 (+10=) 50 The incorrect number is 42. It should be 40.
1, 2, 3, 6, 7, 14, 21, 42 1, 2, 5, 10, 25, 50
42
Three: 36, 42, 48.
The greatest common factor of 13 and 50 is 1.
2 + 5 + 10 + 25 = 42
42
31 out of 42 is 73.81%