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Sequence Group IV (Posted on 2010-09-29) Difficulty: 3 of 5
Four positive integers P, Q, R and S with P < Q < R < S are such that P, Q and R (in this order) are in geometric sequence and Q, R and S (in this order) are in harmonic sequence.

Given that S - P = 40, determine all possible quadruplet(s) (P, Q, R, S) that satisfy the given conditions.

No Solution Yet Submitted by K Sengupta    
Rating: 4.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Hints/Tipsreached somewhere (spoiler)Steve Herman2010-09-30 22:46:51
Some Thoughtshad a go and reached nowhereVishal Gupta2010-09-30 16:30:50
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