18
The difference between the last digit and the rest of the number is a multiple of 11
88 is an even number 99 is an odd number 99 - 88 =11
97 - 11 = 86
Office
18
2(n - 11)
11,33
18
The difference between the last digit and the rest of the number is a multiple of 11
L = S + 11; 2S + 3(S + 11) = 123, ie 2S + 3S + 33 = 123ie 5S = 90 ie S = 18 and L = 29
(8 - x) - 11
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88 is an even number 99 is an odd number 99 - 88 =11
11 and 7 have a difference of 4.
97 - 11 = 86
The difference between 11 times the last digit and the rest of the number is a multiple of 37