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04 Mar 2025, 01:30
Kudos
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
62% (01:05) correct
38%
(01:06)
wrong
based on 173
sessions
History
Date
Time
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Not Attempted Yet
How many trailing zeroes does 24! + 25! has?
(A) 4
(B) 5
(C) 6
(D) 9
(E) 10
(A) 4
(B) 5
(C) 6
(D) 9
(E) 10
04 Mar 2025, 01:37
Kudos
Bookmarks
24! + 25! = 24! (1+ 25) = 24! * 26
Looking for max number of 5 to identify the number of zeros (as 5 is going to be restrictive)
24/5 = 4 zeros
There will be 4 trailing zeros
Looking for max number of 5 to identify the number of zeros (as 5 is going to be restrictive)
24/5 = 4 zeros
There will be 4 trailing zeros
Bunuel
04 Mar 2025, 03:07
Kudos
Bookmarks
Bunuel
24! + 25! = 24! + 25*24! = 24!*26
Number of trailing Zeros in 24! = Power of 5 in 24! = [24/5] + [24/5^2] = 4+0 = 4
Answer: Option A
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