Question: 3. Find the remainder when $13^{7}$ is divided by 9. Now, $13 equiv 13(bmod 9) equiv 4(bmod 9)$ Page 1 of 6 $13^{2} equiv 16(bmod

3. Find the remainder when $13^{7}$ is divided by 9. Now, $13 \equiv 13(\bmod 9) \equiv 4(\bmod 9)$ Page 1 of 6 $13^{2} \equiv 16(\bmod 9) \equiv 7(\bmod 9) $ $13^{4} \equiv 49(\bmod 9) \equiv 4(\bmod 9)$ $13^{6} \equiv 28 (\bmod 9) \equiv 1(\bmod 9)$ $13^{7} \equiv 4(\bmod 9)$ Therefore, the remainder is 4. CS.VS. 1404
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