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When (7777 + 77) is divided by 78, the remainder is:
Answer & Solution
Correct Answer:
Option
C
$$\eqalign{
& \frac{{{{77}^{77}} + 77}}{{78}} \cr
& = {\left( { - 1} \right)^{77}} + \left( { - 1} \right) \cr
& = - 1 - 1 \cr
& = - 2 \cr
& {\text{Remainder}} = 78 - 2 = 76 \cr} $$
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