21
20/21 times 42 = 40
The numbers are: 42+ 7 times sq rt of 30 and 42- 7 times sq rt of 30
4 x something = 42. So 42 / 4 = something. 42 / 4 = 10.5 so 4 x 10.5 = 42 10.5
42 divided by 18= 2 and1/3
42 x 5 = 210
6
3 times 1
1 x 84, 2 x 42, 3 x 28, 4 x 21, 6 x 14, 7 x 12 = 84
7 times 6 equals 42 :)
7 x 7
1 x 2 = 2