Quant Question Of The Day: 80
Numbers
Find the smallest value of n for which 100!/20ⁿ is not divisible by 20.
a) 24
b) 25
c) 48
d) 49
e) None
Recent Forum Posts/Questions/Answers
New Question: Coordinate Geometry
good information
By Những dòng bồn cầu thông minh ... , 4 months ago
Recent Blog Posts
Recent Blog Comments
- LouisHayes on Quant Question Of The Day: 275
- pankaj saket on GK Question of the day: 22
- sajal on Puzzle of The Day
- sajal on Puzzle of The Day
- Lalit Bansal on Quant Question Of The Day: 275
- Rajendra Kumar on Countdown to CAT 2020|DAY 87|LRDI
- Shruti Tiwari on GK Question of the day: 21
- Deepika on GK Question of the day: 21
- Deepika on Quant Question Of The Day: 275
- Anubhav Swaroop on Quant Question Of The Day: 269
Other websites
© 2007-2020 by TathaGat.
25
25 is not correct, Twinkle.
24
C. 48
A. 24
A. 24
Max. power of 5 in 100! = 24 , and we have sufficient power of 2^2 . Hence , we will have 20^24 in 100! .
When divided by 20^24 , it will exhaust all powers of 20 in 100! . Therefore , now 100! /20^24 will not be divisible by 20 .