56
The sum of 11 and 7 is 18.
2,7,11 2 x 7 x 11 = 154 2 + 7 + 11 = 20
66.
11 is a tricky one, but this is how:if the sum of every other digit minus the sum of all the other digits equals a multiple of 11example:Q: Is 164725 divisible by 11?A: Yes. and this is why... first you take every other digit 164725, then add them 6+7+5=18. Now take the rest of the numbers 164725 and add them, 1+4+2=7. After that subtract them, 18-7=11, and 11 is a multiple of 11 (11x1=11).
-4
The only stable pattern is that the difference between the sum of all the digits in odd locations and the sum of all digits in even locations is a multiple of 11.For example, 5678*11 = 62458Sum of odd locations = 6 + 4 + 8 = 18Sum of even locations = 2 + 5 = 7Difference = 18 - 7 = 11 which is a multiple of 11.
SUM means plus 4+7=11
The estimated sum is 11 The actual sum is 10 and 19/24
The Greatest Common Multiple of 7 and 11 is 1.
27
Your question makes no sense
The numbers 40.5 and 36.5 have a difference of 4 and a sum of 77.