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10 Apr 2017, 20:34
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B
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72% (01:04) correct
28%
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based on 127
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How many integers k are there such that \(1<7k-14<49\) ?
A. 7
B. 6
C. 5
D. 4
E. 3
Source: GMAT Free
A. 7
B. 6
C. 5
D. 4
E. 3
Source: GMAT Free
10 Apr 2017, 22:10
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nguyendinhtuong
How many integers k are there such that \(1<7k-14<49\) ?
A. 7
B. 6
C. 5
D. 4
E. 3
Source: GMAT Free
A. 7
B. 6
C. 5
D. 4
E. 3
Source: GMAT Free
\(1<7k-14<49\)
Add 14 to all parts: \(15<7k<63\)
Divide by 7: \(2\frac{1}{7}<k<9\)
k can be 3, 4, 5, 6, 7, and 8.
Answer: B.
10 Apr 2017, 22:22
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Ans: A
Becoz write down numbers from 2 to 9 and multiply it by 7. This numbers will be below 49.
If you take above 9 this numbers will be greater than 49.
If you take the negative integers you will get negative numbers in the intervals which is not true.
Sent from my A0001 using GMAT Club Forum mobile app
Becoz write down numbers from 2 to 9 and multiply it by 7. This numbers will be below 49.
If you take above 9 this numbers will be greater than 49.
If you take the negative integers you will get negative numbers in the intervals which is not true.
Sent from my A0001 using GMAT Club Forum mobile app
