Is (5^k )<1000?
1. (5)^k+1 >3000
2. (5)^k-1 = (5^k)-500
qa is b
question can be rephrased as: is k less than 3?
st.1 says k >4 hence sufficient in my book.
st. 2 gives clear answer so sufficient
what is wrong with statement 1?
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This topic has expert replies
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simba12123
- Senior | Next Rank: 100 Posts
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You can not assume that K is an integersimba12123 wrote:Is (5^k )<1000?
1. (5)^k+1 >3000
2. (5)^k-1 = (5^k)-500
qa is b
question can be rephrased as: is k less than 3?
st.1 says k >4 hence sufficient in my book.
st. 2 gives clear answer so sufficient
what is wrong with statement 1?
-
EricLien9122
- Master | Next Rank: 500 Posts
- Posts: 106
- Joined: Thu May 22, 2008 10:50 am
- Thanked: 3 times
rephrase should be: is k<4?
1. 5^(k+1)>3000
k>3,
k=3.5 yes
k=4 no
Insufficient.
2. Gives a define value of k, therefore sufficient.
Please correct me if i make a mistake.
1. 5^(k+1)>3000
k>3,
k=3.5 yes
k=4 no
Insufficient.
2. Gives a define value of k, therefore sufficient.
Please correct me if i make a mistake.
