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  •  Find the last two digits of the number 7887Option: 1 12Option: 2 32</d

 Find the last two digits of the number 7887

Option: 1

12


Option: 2

32


Option: 3

52


Option: 4

72


Answers (1)

best_answer

$\begin{aligned} & 78^{87} / 100 \\ & \Rightarrow\left(78^{2 *} 78^{85}\right) / 100=\left(39^{2 *} 78^{85}\right) / 25\end{aligned}$
$\begin{aligned} & \Rightarrow 14 * 14 * 3^{85} / 25 \\ & \Rightarrow 14 * 14 * 3^5 / 25\end{aligned}$
$\begin{aligned} & \Rightarrow 14 * 14 * 18 / 25=3528 / 25=3 \\ & \Rightarrow 3 * 4=12\end{aligned}$
Option A

Posted by

Rishi

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