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21 Aug 2023, 01:30
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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:
55%
(hard)
Question Stats:
53% (01:08) correct
47%
(01:09)
wrong
based on 138
sessions
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Not Attempted Yet
If x is a prime number, what is the value of x?
(1) There are 3 prime numbers between 11 and x, not inclusive.
(2) x + 1 is a prime number.
(1) There are 3 prime numbers between 11 and x, not inclusive.
(2) x + 1 is a prime number.
If x is a prime number, what is the value of x?
(1) There are 3 prime numbers between 11 and x, not inclusive.
(2) x + 1 is a prime number.
St1:
2,3,5,7,11
11,13,17,19,20
So, x can be 2 or 20 . Not Sufficient
St2:
x=2, x+1=3
Sufficient
IMO: Answer B
(1) There are 3 prime numbers between 11 and x, not inclusive.
(2) x + 1 is a prime number.
St1:
2,3,5,7,11
11,13,17,19,20
So, x can be 2 or 20 . Not Sufficient
St2:
x=2, x+1=3
Sufficient
IMO: Answer B
21 Aug 2023, 02:36
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Nabneet
Answer is B as X has to be prime itself and 4 is not a prime. X has to be 2 so 2+1 is 3 which is a prime itself
