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Sequences and averages

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by mjjking » Tue Mar 24, 2009 7:29 am
Answer is C
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Source: — Data Sufficiency |
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by Sher1 » Tue Mar 24, 2009 7:44 am
St 1 gives us only the sum of the term. Nothing more we can do with it
St 2 give us only average

Together avg=sum/number

we have two of these and need to find the number of term which we can as 3124 / 4 = 781

C
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by mjjking » Tue Mar 24, 2009 8:59 am
This was so damn easy!
It was the second to last question of the test, so I bombed it probably because I Was tired.... I feel dumb now! :oops:
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by sanjay_dce » Tue Mar 24, 2009 9:19 am
Sher1 wrote:St 1 gives us only the sum of the term. Nothing more we can do with it
St 2 give us only average

Together avg=sum/number

we have two of these and need to find the number of term which we can as 3124 / 4 = 781

C
from 1st stmt we know the sum of of numbers,
from 2ns stmt we know the avg

using both we know the value of n hence C
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by rs2010 » Tue Mar 24, 2009 1:03 pm
mjjking wrote:This was so damn easy!
It was the second to last question of the test, so I bombed it probably because I Was tired.... I feel dumb now! :oops:
I envy you Mjking you have awesome scores in verbal :oops: :lol:
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by mjjking » Tue Mar 24, 2009 1:14 pm
And I envy all you engineers and mathematicians who easily get 48+ in Q without trying too hard... I would be pleased with a 47, but a 45-46 is ok too! :D
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REAL THING 1 (AUG 2007): 680 (Q43, V40)
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