Least Integer

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dtweah: Master | Next Rank: 500 Posts; Posts: 487; Joined: Fri Mar 27, 2009 5:49 am; Thanked: 36 times

by dtweah » Tue May 19, 2009 9:53 am

Calculate the least integer greater than 5^((-6)(-5)(-4)...(2)(3)(4))

A. 1

B. 2

C. 3

D. 4

E. 5

Source: Beat The GMAT — Problem Solving | Tue May 19, 2009 9:53 am

scoobydooby: Legendary Member; Posts: 1035; Joined: Wed Aug 27, 2008 10:56 pm; Thanked: 104 times; Followed by:1 members

by scoobydooby » Tue May 19, 2009 10:10 am

(-6)(-5)(-4)...(2)(3)(4)=>-6*-5*-4......0*1*2*3*4=0

so 5^((-6)(-5)(-4)...(2)(3)(4)) =5^0=1

least integer greater than 1 is 2

hence, B

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