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At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
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Updated on: 10 Jul 2019, 05:06
Originally posted by rohan2345 on 16 May 2017, 00:32.
Last edited by Sajjad1994 on 10 Jul 2019, 05:06, edited 2 times in total.
Last edited by Sajjad1994 on 10 Jul 2019, 05:06, edited 2 times in total.
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
82% (01:21) correct
18%
(01:06)
wrong
based on 215
sessions
History
Date
Time
Result
Not Attempted Yet
Except for the first two numbers, every number in the sequence –1, 3, 2, . . . is the sum of the two immediately preceding numbers. How many numbers of this sequence are even?
(A) none
(B) one
(C) two
(D) three
(E) more than three
(A) none
(B) one
(C) two
(D) three
(E) more than three
Source: Nova GMAT
Difficulty Level: 550
Difficulty Level: 550
16 May 2017, 00:40
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rohan2345
–1, 3, 2, 3+2=5, 2+5=7, 5+7=12, 7+12=19, 12+19=31, 19+31=50, 31+50=81, 50+81=131, 81+131=212..
Answer: E.
Updated on: 02 May 2020, 10:19
Originally posted by BrentGMATPrepNow on 16 May 2017, 05:45.
Last edited by BrentGMATPrepNow on 02 May 2020, 10:19, edited 1 time in total.
Last edited by BrentGMATPrepNow on 02 May 2020, 10:19, edited 1 time in total.
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rohan2345
Another approach is to ignore the numerical values and just apply the rules for EVEN/ODD integers.
So, -1, 3, 2, . . . becomes ODD, ODD, EVEN, . . .
When we apply the ODD/EVEN rules, we get: ODD, ODD, EVEN, ODD, ODD, EVEN, ODD, ODD, EVEN, ODD, ODD, EVEN, ODD, ODD, ....
Answer:
