68 + 86 is divisible by:
11
13
9
5
68 + 86 = 154 is divisible by 11.
(103)86−(86)103 is divisible by
If 68y5 is divisible by 11,Where y is a digit,What is the value of y
Question 86 (xix)
Using suitable identities, evaluate the following:
(132)2−(68)2