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OpenStudy (anonymous):
The sum of three consecutive odd numbers is 153. Which is the MIDDLE number? options are : A-47 B-49 C-51 D-53
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OpenStudy (cwrw238):
Hint : the middle number will be the mean of the 3 numbers How do you find the mean of 3 numbers?
OpenStudy (anonymous):
Mean?
OpenStudy (cj49):
N-2,N,N+2 N-2+N+N+2=153 3N=153 N=51
OpenStudy (cwrw238):
average 153 / 3 = 51 3 numbers are 50,51,52
OpenStudy (cwrw238):
oh! sorry - i misread the question - i took it to mean 3 consecutive numbers - not consecutive odd
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OpenStudy (anonymous):
okay i was confused?
OpenStudy (cj49):
the ans is 51
OpenStudy (cwrw238):
- though the answer happens to be the same
OpenStudy (cj49):
49+51+53=153
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