Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 25 Apr 2015, 22:29

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

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

Author Message
TAGS:
Senior Manager
Joined: 02 Dec 2007
Posts: 463
Followers: 2

Kudos [?]: 55 [0], given: 6

How many 8-letter words can be created using computer [#permalink]  27 Aug 2008, 07:50
. How many 8-letter words can be created using computer language (0/1 only)?

a) 16
b) 64
c) 128
d) 256
e) 512
Manager
Joined: 15 Jul 2008
Posts: 209
Followers: 3

Kudos [?]: 30 [0], given: 0

Re: 8 letter word [#permalink]  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
SVP
Joined: 07 Nov 2007
Posts: 1828
Location: New York
Followers: 29

Kudos [?]: 535 [0], given: 5

Re: 8 letter word [#permalink]  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

I KNOW .. I will be famous for silly mistakes
_________________

Smiling wins more friends than frowning

Manager
Joined: 22 Jul 2008
Posts: 154
Followers: 1

Kudos [?]: 9 [0], given: 0

Re: 8 letter word [#permalink]  27 Aug 2008, 09:33
8 C 0 + 8 C 1 + 8 C 2 + ...........+ 8 C 8 = 2^8 = 256
Current Student
Joined: 11 May 2008
Posts: 562
Followers: 7

Kudos [?]: 53 [0], given: 0

Re: 8 letter word [#permalink]  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?
Intern
Joined: 18 May 2008
Posts: 1
Followers: 0

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

Re: 8 letter word [#permalink]  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
Similar topics Replies Last post
Similar
Topics:
7 How many words can be formed using all the letters of "EQUAT 8 16 Jun 2012, 19:38
In how many ways can the letters of the word "COMPUTER" be arranged? 1 10 Jan 2012, 06:08
1 In how many ways can the letters of the word "COMPUTER" 2 27 Jul 2010, 19:50
8 On how many ways can the letters of the word "COMPUTER" be a 15 25 Jun 2007, 13:04
How many 7 letter words can be constructed using 26 letters 9 12 Apr 2006, 19:09
Display posts from previous: Sort by