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This topic has 1 member reply
maxim730 Senior | Next Rank: 100 Posts
Joined
26 Dec 2006
Posted:
76 messages
Followed by:
2 members

Wed Jan 17, 2007 3:59 pm
Q: (1/5)^m * (1/4)^18 = 1/ (2*10^35)

m=?

Ans is 35

I have no idea how that was derived.

Can someone please explain? Thanks

Source: GMAT Prep

GMATDUD Senior | Next Rank: 100 Posts
Joined
16 Jan 2007
Posted:
62 messages
Thu Jan 18, 2007 7:48 am
(1/5)^M = 4^18/2*10^35
= 2*2^35/2*10^35
= 2^35/10^35
= (2/10)^35
= (1/5)^35

Hence M = 35.

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