6-4=2 8+2=10 10:2=5
2+10+6+4
(4! + 2 + 3) x 1 [For those who do not know, 4! = 10]
2 + 8 = 10... 3 + 7 = 10... 6 - 4 = 2 10 x 10 = 100... 100 x 2 = 200That's assuming you don't have to use all the numbers !
2 x 2 = 4 2 x 5 = 10
You can make 5 combinations of 1 number, 10 combinations of 2 numbers, 10 combinations of 3 numbers, 5 combinations of 4 numbers, and 1 combinations of 5 number. 31 in all.
6 and 4
2 (10 if you count the ones that make up the other numbers.)
Ten different digits can be used to make 10C4 = 10*9*8*7/(4*3*2*1) = 210 four-digit numbers. Either numbers starting with 0 are permitted or the 10 digits do not contain a 0.
4+1=5... 5x2=10... 10+3=13 !
6 and 4
The LCM of 2 numbers can be one of those numbers when the large of the 2 numbers is 2 times the smaller one of those numbers. For example the LCM of 2 and 4 is 4. For example the LCM of 5 and 10 is 10.