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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
15% (02:07) correct
85%
(01:53)
wrong
based on 39
sessions
History
Date
Time
Result
Not Attempted Yet
What's the value of \(abc\) if
\(a+b=abc\)
\(b+c=abc\)
\(c+a=abc\)
(1) \(a^2\) is prime number.
(2) \(b > 0\)
\(a+b=abc\)
\(b+c=abc\)
\(c+a=abc\)
(1) \(a^2\) is prime number.
(2) \(b > 0\)
19 Jul 2022, 11:30
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Is the OA really D?
With the three expressions, I am already able to arrive at a = b = c = +sqrt(2) or -sqrt(2).
Understanding the sign of either one of a or b or c should get me to the value of abc. Statement 2 does this readily.
With statement 1, I could arrive at the value of a being either +1 or +sqrt(2), which does not really help as it gives two solutions for abc.
IMO the answer should be B. Correct me if I am wrong. Cheers!
With the three expressions, I am already able to arrive at a = b = c = +sqrt(2) or -sqrt(2).
Understanding the sign of either one of a or b or c should get me to the value of abc. Statement 2 does this readily.
With statement 1, I could arrive at the value of a being either +1 or +sqrt(2), which does not really help as it gives two solutions for abc.
IMO the answer should be B. Correct me if I am wrong. Cheers!
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