21 and 21 equal 42.
if you mean their product is 21, then 7x3=21
They are: 19+2 = 21
10.5 + 10.5 = 21
The range of these numbers, the difference between the highest and lowest of these numbers, is equal to 28-15 = 13.
79
20 + 1
21
The numbers are: 3 -sq rt of 21 and 3 +sq rt of 21
The sum of any four odd numbers will never be equal to an odd number.
10.5 x 2=21
24 & 3