+0

# Factorials

+8
970
6
+382

1. The number obtained from the last two nonzero digits of 2019! is equal to ππ. What is ππ?

2. The number obtained from the last two nonzero digits of 2019! is equal to ππ. What is ππ?

Dec 27, 2019

#1
+1

Here are the last 10 non-zero digits of 2019! =2,587,693,056. So, the last two digits multiplied =5 x 6 = 30.

If you meant added together, then: 5 + 6 = 11. Take your pick !!.

Dec 27, 2019
#2
+118622
+1

Dec 27, 2019
#3
+1713
+1

Probably.

In that case, I would assume trying to solve it guest's way would still work, assuming again that you don't make a math error AND you don't have a time limit...

tommarvoloriddle  Dec 28, 2019
#4
+118622
+1

Especially if you are good at maths, live to be 1000000000 years old and have nothing else ot do with your time.

Melody  Dec 28, 2019
#5
+382
+2

Yes. I got this problem from my friend. When I searched it up, I found a very similar AMC 10 problem. That's probably where he got it from.

https://artofproblemsolving.com/wiki/index.php/2010_AMC_10A_Problems/Problem_24

hellospeedmind  Dec 28, 2019
#6
+118622
0

Thanks Hellospeedmind

Melody  Dec 29, 2019