When you hate zeroes

Find the right most non-zero digit of 45 ! 45! .


The answer is 6.

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1 solution

Mohan Nayak
Apr 22, 2017

(45/5)! 2^(45/9) =9! 2^9.. last digit of 9!=8.. 2^9 (last digit) =2 8*2=16 last digit=6.

excuse me if you don't understand.

mohan nayak - 4 years, 1 month ago

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Plz be clear in ur solution.

Ayush G Rai - 4 years, 1 month ago

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it's very hard to right solutions on brilliant.sorry Ayush

mohan nayak - 4 years, 1 month ago

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@Mohan Nayak no problem. try to learn latex writing.

Ayush G Rai - 4 years, 1 month ago

thank you very much sathwik.

mohan nayak - 4 years ago

no dude. I had seen it somewhere online some days ago.

mohan nayak - 4 years ago

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