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Math Maniac ? Try This . by agentofchange1(m): 11:42am On Feb 26, 2015
kinda cheep I guess

I bought 6lamps from the market , positioned them at 6corners of a dark hexagonal-building at about 8:30pm all lamps functioning well, using all/any of the lamps . in how many ways can the building be illuminated ?


answer asap..
Re: Math Maniac ? Try This . by Nobody: 11:47am On Feb 26, 2015
ONE WAY.
Re: Math Maniac ? Try This . by agentofchange1(m): 11:51am On Feb 26, 2015
DDeliverer:
ONE WAY.

haha.....how I wish ur. close ..
Re: Math Maniac ? Try This . by ayodijex(m): 12:00pm On Feb 26, 2015
6 ways?..(6 permutation 6)
Re: Math Maniac ? Try This . by agentofchange1(m): 12:08pm On Feb 26, 2015
ayodijex:
6 ways?..(6 permutation 6)

no sir....
Re: Math Maniac ? Try This . by html14java(f): 4:01pm On Feb 26, 2015
1345
Re: Math Maniac ? Try This . by dejt4u(m): 4:17pm On Feb 26, 2015
agentofchange1:


no sir....
720
Re: Math Maniac ? Try This . by agentofchange1(m): 5:56pm On Feb 26, 2015
Lol.

^^

all wrong .
Re: Math Maniac ? Try This . by fio(m): 6:37pm On Feb 26, 2015
978 ways
Re: Math Maniac ? Try This . by dejt4u(m): 6:44pm On Feb 26, 2015
agentofchange1:

Lol.

^^

all wrong .
63
Re: Math Maniac ? Try This . by agentofchange1(m): 7:56pm On Feb 26, 2015
dejt4u:
63

correct!!.

show workings..
Re: Math Maniac ? Try This . by dejt4u(m): 8:32pm On Feb 26, 2015
agentofchange1:


correct!!.

show workings..
6C1 + 6C2 + 6C3 + 6C4 + 6C5 + 6C6
= 6 + 15 + 20 + 15 + 6 + 1
= 63
Re: Math Maniac ? Try This . by agentofchange1(m): 8:41pm On Feb 26, 2015
dejt4u:

6C1 + 6C2 + 6C3 + 6C4 + 6C5 + 6C6
= 6 + 15 + 20 + 15 + 6 + 1
= 63

nice 1 ..man



or simply

for general case .


2n -1

n=6

=> 26 - 1
=64-1=63

hence they are 63ways of illuminating the building .


@bravo.

1 Like

Re: Math Maniac ? Try This . by dejt4u(m): 8:45pm On Feb 26, 2015
agentofchange1:


nice 1 ..man



or simply

for general case .


2n -1

n=6

=> 26 - 1
=64-1=63

hence they are 63ways of illuminating the building .


@bravo.
tnx.. I dn learn new thing oo..

I thought gen. Case is (n!-1).
God bless ya
Re: Math Maniac ? Try This . by ayodijex(m): 8:45pm On Feb 26, 2015
dejt4u:

6C1 + 6C2 + 6C3 + 6C4 + 6C5 + 6C6
= 6 + 15 + 20 + 15 + 6 + 1
= 63
hmm..nice one
all/any...
Thats the statement.
*doffs cap*

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