What is the rightmost non-zero digit of \(30^{58}\cdot 17^{85}?\)

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by VJesus12 » Sun Jan 17, 2021 4:25 am

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What is the rightmost non-zero digit of \(30^{58}\cdot 17^{85}?\)

A. 0
B. 1
C. 3
D. 7
E. 9

Answer: C

Source: e-GMAT

Source: Beat The GMAT — Problem Solving | Sun Jan 17, 2021 4:25 am

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