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the latest: 4 problems

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Intern
Joined: 29 Apr 2010
Posts: 4

Kudos [?]: [0], given: 1

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29 Apr 2010, 01:35
Can anyone solve at least some of these?

(1)
What is A5 when A0=1 A1=2，An=2（《An-1》-1）+《An-2》 ?

(2)
is x^2-y^2>0?
1) x>|y|
2) |x|>y

(3)
X=?
1）x=（1.9583）X
2) X^2 = (6.2597) x^2

(4)
There are 30 interviewees and 3 interviewers. 15 interviewees were recommanded by the first interviewer, 17 were recommanded by the second interviewer, 20 were recommanded by the third interviewer. What is the least number of interviewees who were recommanded by all three interviewers?

Kudos [?]: [0], given: 1

Intern
Joined: 29 Apr 2010
Posts: 4

Kudos [?]: [0], given: 1

Re: the latest: 4 problems [#permalink]

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29 Apr 2010, 05:07
nverma, just gave you the kudo you deserve

Kudos [?]: [0], given: 1

Re: the latest: 4 problems   [#permalink] 29 Apr 2010, 05:07
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the latest: 4 problems

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