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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:
65%
(hard)
Question Stats:
52% (01:52) correct
48%
(01:45)
wrong
based on 109
sessions
History
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Not Attempted Yet
The percentage of integers from 1 through 100 whose squares end with the digit 1 is x% and the percentage of integers from 1 through 200 whose squares end with 1 is y%. Which one of the following is true?
A) x=y
B) X = 2y
C) X = 4y
D) y = 2x
E) y = 4x
A) x=y
B) X = 2y
C) X = 4y
D) y = 2x
E) y = 4x
09 Sep 2018, 20:58
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Numbers between 1 - 100 whose square ends in 1 is 20 - 1,9,11,19......91,99 -> 20 -> %of such numbers out of 100 = 20/100 -> 20%
Such numbers between 1 - 200 - 40 -> % -> 40/200 -> 20%
Hence Option A
Such numbers between 1 - 200 - 40 -> % -> 40/200 -> 20%
Hence Option A
09 Sep 2018, 21:01
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mitusingla
Numbers between 1 - 100 whose square ends in 1 is 20 - 1,9,11,19......91,99 -> 20 -> %of such numbers out of 100 = 20/100 -> 20%
Such numbers between 1 - 200 - 40 -> % -> 40/200 -> 20%
Hence Option A
Such numbers between 1 - 200 - 40 -> % -> 40/200 -> 20%
Hence Option A
I used the same approach, and also concluded that the answer is A. But, the OA listed is E.
Any thoughts?
Posted from my mobile device
