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20 Feb 2020, 15:56
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
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Question Stats:
67% (01:11) correct
33%
(01:04)
wrong
based on 43
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What is the units digit of \(x^3\)?
(1) x is even
(2) \(x^3\) is between 10 and 100
(1) x is even
(2) \(x^3\) is between 10 and 100
shameekv1989
20 Feb 2020, 16:31
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OhMy
What is the units digit of \(x^3\)?
(1) x is even
(2) \(x^3\) is between 10 and 100
(1) x is even
(2) \(x^3\) is between 10 and 100
OhMy :- Can you please explain how B could be an answer?
i) x is even -> x could be 2,4 -> x^3 = 8, 64 - Multiple values - Not Sufficient
ii) x^3 is between 10 and 100 -> x could be 3 or 4 -> x^3 can be 27 or 64 -> Units digit can be 7 or 4 - Insufficient
Combining i) and ii) x^3 can only be 64 -> Units digit is 4
Hence C should be an answer.
21 Feb 2020, 00:11
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shameekv1989
OhMy
What is the units digit of \(x^3\)?
(1) x is even
(2) \(x^3\) is between 10 and 100
(1) x is even
(2) \(x^3\) is between 10 and 100
OhMy :- Can you please explain how B could be an answer?
i) x is even -> x could be 2,4 -> x^3 = 8, 64 - Multiple values - Not Sufficient
ii) x^3 is between 10 and 100 -> x could be 3 or 4 -> x^3 can be 27 or 64 -> Units digit can be 7 or 4 - Insufficient
Combining i) and ii) x^3 can only be 64 -> Units digit is 4
Hence C should be an answer.
Edited the OA. It's C, not B.
