21x8=84
The GCF is 7x^7.
17444578
Stock tire size for front is 21x8-9 , rear is 22x10-10 . 9 inch wheels front 10 inch rear .
84x2=168. There are other solutions. 56x3=168. 42x4=168. 28x6=168. 24x7=168. 21x8=168. 14x12=168.
Improve 21x1=21 21x2=42 21x3=63 21x4=84 21x5=105 21x6=126 21x7=147 21x8=168 21x9=189 21x10=210
The multiples of 21 up to 500 are as follows: 21x1=21 21x2=42 21x3=63 21x4=84 21x5=105 21x6=126 21x7=147 21x8=168 21x9=189 21x10=210 21x11=231 21x12=252 21x13=273 21x14=294 21x15=315 21x16=336 21x17=357 21x18=378 21x19=399 21x20=420 21x21=441 21x22=462 21x23=483 21x24=504
Each number appears once with every other number and once with blank and once with itself.So for 1 there are0 - 11 - 12 - 13 - 14 - 15 - 16 - 1and, as the double-1 must be included twice, there are eight 1s in a set.Similarly, there are eight of all the other numbers too.So, as 1+2+3+4+5+6 = 21 and 21x8 = 168, there are 168 dots on a blank-to-six set of dominoes.