Question

77^3+13^3-90^3 is divisible by
a. Both 13 and 17
b. Both 1 and 17
c. Both 11 and 13
d. Both 3 and 9
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Answer 1

Answer:

option c

Step-by-step explanation:

wander for that equation is -270270

so when divided by 11 and 13, it is divisible