CR Strike Rate and Increasing Level of Difficulty in OG12??

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After finishing the CR Bible i started doing timed sets of CR questions from OG12.

I started with a 85% strike rate for the first 50 questions but quickly dropped to a bit under 70% once i got to the questions in the 70s & 80s. I answered most questions within 1:45- 2:30 (although some were right around 3 min) Im saving the harder ones for later, as i did these for 4 hours straight today.

I was just wondering what the levels in the OG guide are? for example questions
100- 124 800 level.
70-100 700 level
50-70 600 level etc...

also what is the CR strike rate I should be aiming for? 80%-90%?
Source: — GMAT Strategy |

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by bond0007 » Tue Aug 03, 2010 9:09 am
someone help please

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by dattilvc » Tue Aug 03, 2010 1:04 pm
I am also curious about this.

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by bond0007 » Tue Aug 03, 2010 1:23 pm
someone I spoke to said that questions 80 & up are the HARD level ones.

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by dattilvc » Tue Aug 03, 2010 1:40 pm
Hard as in 600 level and above? If that is the case That makes me feel better. What is 1-79? 500 level?