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16 Sep 2014, 01:11
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Which of the following is closest to \(10.001^2\) ?
A. 100.00
B. 100.01
C. 100.02
D. 100.03
E. 100.04
A. 100.00
B. 100.01
C. 100.02
D. 100.03
E. 100.04
16 Sep 2014, 01:11
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Official Solution:
Which of the following is closest to \(10.001^2\) ?
A. 100.00
B. 100.01
C. 100.02
D. 100.03
E. 100.04
\(10.001^2 = \)
\(=(10 + 0.001)^2 = \)
\(=10^2 + 2*10*0.001 + 0.001^2 = \)
\(=100 + 0.02 + \text{ something small} \approx \)
\(\approx 100.02\).
Answer: C
Which of the following is closest to \(10.001^2\) ?
A. 100.00
B. 100.01
C. 100.02
D. 100.03
E. 100.04
\(10.001^2 = \)
\(=(10 + 0.001)^2 = \)
\(=10^2 + 2*10*0.001 + 0.001^2 = \)
\(=100 + 0.02 + \text{ something small} \approx \)
\(\approx 100.02\).
Answer: C
General Discussion
spetznaz
Joined: 08 Jun 2015
Last visit: 14 Jul 2024
Posts: 254
Given Kudos: 147
Location: India
Schools: Tepper '21 (D) IIMC PGPEX"20 (A) ISB '20 (A) HEC Jan19 Intake IIMA PGPX"20 (A) IIMB EPGP"20 (D) IMD '21 (D)
GMAT 1: 640 Q48 V29
GMAT 2: 700 Q48 V38
GPA: 3.33
Products:
Schools: Tepper '21 (D) IIMC PGPEX"20 (A) ISB '20 (A) HEC Jan19 Intake IIMA PGPX"20 (A) IIMB EPGP"20 (D) IMD '21 (D)
GMAT 2: 700 Q48 V38
Posts: 254
07 Dec 2017, 09:00
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+1 for C. Use (a+b)(a+b) = a*a + b*b + 2*a*b. Solve and get the answer as C.
