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D
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Difficulty:
5%
(low)
Question Stats:
95% (00:41) correct
5%
(00:58)
wrong
based on 84
sessions
History
Date
Time
Result
Not Attempted Yet
If a, b, c and d are consecutive integers (a < b < c < d). What is the value of (d + c) - (b + a) ?
A. 1.
B. 2.
C. 3.
D. 4.
E. 0.
A. 1.
B. 2.
C. 3.
D. 4.
E. 0.
12 Sep 2019, 01:46
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Bunuel
Let, a, b, c, and d are 1, 2, 3, 4 respectively
d+c = 4+3 = 7
b+a = 2+1 = 3
i.e. (d + c) - (b + a) = 7-3 = 4
Answer: Option D
General Discussion
17 Sep 2019, 08:17
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Let a,b,c,d be n, n+1, n+2, n+3 respectively.
(d+c) - (b+a)
= (n+3+n+2) - (n+1+n)
= 2n + 5 - 2n - 1
= 4
Is the OA wrong? Because the answer I got is 4.
--Niyati Muchhala--
Posted from my mobile device
(d+c) - (b+a)
= (n+3+n+2) - (n+1+n)
= 2n + 5 - 2n - 1
= 4
Is the OA wrong? Because the answer I got is 4.
--Niyati Muchhala--
Posted from my mobile device
