How many 8-letter words can be created using computer : Quant Question Archive [LOCKED]
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# How many 8-letter words can be created using computer

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How many 8-letter words can be created using computer [#permalink]

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27 Aug 2008, 07:50
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

. How many 8-letter words can be created using computer language (0/1 only)?

a) 16
b) 64
c) 128
d) 256
e) 512
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27 Aug 2008, 08:54
x2suresh wrote:
Nihit wrote:
. How many 8-letter words can be created using computer language (0/1 only)?

a) 16
b) 64
c) 128
d) 256
e) 512

$$2^8 =128$$

2^8 = 256
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27 Aug 2008, 08:55
bhushangiri wrote:
x2suresh wrote:
Nihit wrote:
. How many 8-letter words can be created using computer language (0/1 only)?

a) 16
b) 64
c) 128
d) 256
e) 512

$$2^8 =128$$

2^8 = 256

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27 Aug 2008, 09:33
8 C 0 + 8 C 1 + 8 C 2 + ...........+ 8 C 8 = 2^8 = 256
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27 Aug 2008, 17:26
how come we dont have to divide???
usually we divide by no. of similar things right??
out of 5 cars 2 are blue and 3 are red. how many ways can we arrange?
5!/(2!*3!).
so why not here?
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27 Aug 2008, 21:03
arjtryarjtry wrote:
how come we dont have to divide???
usually we divide by no. of similar things right??
out of 5 cars 2 are blue and 3 are red. how many ways can we arrange?
5!/(2!*3!).
so why not here?

Each letter has 2 ways to write (either 0 or 1). Because there are 8 letters, numbers of words are 2^8
Re: 8 letter word   [#permalink] 27 Aug 2008, 21:03
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