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Updated on: 08 Jul 2019, 01:16
Originally posted by Bunuel on 01 Jun 2017, 12:13.
Last edited by Sajjad1994 on 08 Jul 2019, 01:16, edited 1 time in total.
Last edited by Sajjad1994 on 08 Jul 2019, 01:16, edited 1 time in total.
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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:
5%
(low)
Question Stats:
100% (00:24) correct
0%
(00:00)
wrong
based on 32
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\(\frac{7^9 + 7^8}{8} =\)
(A) 1/8
(B) 7/8
(C) 77/8
(D) 7^8
(E) 7^9
(A) 1/8
(B) 7/8
(C) 77/8
(D) 7^8
(E) 7^9
Source: Nova GMAT
Difficulty Level: 550
Difficulty Level: 550
01 Jun 2017, 12:33
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(7^9+7^8)/8=(7^8)(7+1)/8=7^8
Is there a formatting issue? Should (D) 78 be (D) 7^8?
Is there a formatting issue? Should (D) 78 be (D) 7^8?
Updated on: 01 Jun 2020, 09:31
Originally posted by BrentGMATPrepNow on 01 Jun 2017, 12:49.
Last edited by BrentGMATPrepNow on 01 Jun 2020, 09:31, edited 1 time in total.
Last edited by BrentGMATPrepNow on 01 Jun 2020, 09:31, edited 1 time in total.
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Bunuel
\(\frac{7^9 + 7^8}{8} =\)
(A) 1/8
(B) 7/8
(C) 77/8
(D) 7^8
(E) 7^9
(A) 1/8
(B) 7/8
(C) 77/8
(D) 7^8
(E) 7^9
\(\frac{7^9 + 7^8}{8} = \frac{7^8(7^1 + 1)}{8}\)
\(= \frac{7^8(7 + 1)}{8}\)
\(= \frac{7^8(8)}{8}\)
\(= 7^8\)
Answer: D
