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29 Sep 2021, 01:30
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
67% (01:12) correct
33%
(01:04)
wrong
based on 78
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How many integers are there between, but not including, integers a and b ?
(1) b - a = 8
(2) There are 7 integers between, but not including, a - 1 and b - 1.
(1) b - a = 8
(2) There are 7 integers between, but not including, a - 1 and b - 1.
yashikaaggarwal
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01 Oct 2021, 01:12
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1) B - A = 8
B = A+8
So B is 8 more than A.
Let A = 1, then B = 9
Which makes 7 digit difference between A and B (excluding values of A and B)
(Sufficient)
2) if there are 7 integers between a-1 and b-1.
There will also be 7 integers between A and B.
(Sufficient)
Answer is D
Posted from my mobile device
B = A+8
So B is 8 more than A.
Let A = 1, then B = 9
Which makes 7 digit difference between A and B (excluding values of A and B)
(Sufficient)
2) if there are 7 integers between a-1 and b-1.
There will also be 7 integers between A and B.
(Sufficient)
Answer is D
Posted from my mobile device
04 Oct 2021, 20:45
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i didn't understood case A. can u explain it more briefly...
