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# A palindrome is a number that reads the same forward and backward. For

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Manager
Joined: 15 Dec 2015
Posts: 120
GMAT 1: 660 Q46 V35
GPA: 4
WE: Information Technology (Computer Software)
A palindrome is a number that reads the same forward and backward. For [#permalink]

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06 Sep 2017, 02:36
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A palindrome is a number that reads the same forward and backward. For example. 2442 and 111 are palindromes.If a number is selected at random from 1 to 1000.What is the probability that the number is a palindrome number?

Sorry I dont have options for this
Manager
Joined: 27 Dec 2016
Posts: 233
Concentration: Social Entrepreneurship, Nonprofit
GPA: 3.65
WE: Sales (Consumer Products)
Re: A palindrome is a number that reads the same forward and backward. For [#permalink]

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06 Sep 2017, 02:58
DH99 wrote:
A palindrome is a number that reads the same forward and backward. For example. 2442 and 111 are palindromes.If a number is selected at random from 1 to 1000.What is the probability that the number is a palindrome number?

Sorry I dont have options for this

- Two-digit palindrome : 9X1 = 9. First 9 calculates possibilities of 9 possible number from 1-9.
- Three-digit palindrome : 9*10*1 = 90. First 9 calculates possibilities of 9 possible number from 1-9, second 10 calculates all of the second digit possibilities. We can use 10 numbers from 0 to 9.
- Total probability : $$\frac{(9+90)}{1 to 1000 inclusive} = \frac{99}{1000}$$.

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Intern
Joined: 20 Feb 2017
Posts: 1
Re: A palindrome is a number that reads the same forward and backward. For [#permalink]

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06 Sep 2017, 03:14
septwibowo wrote:
DH99 wrote:
A palindrome is a number that reads the same forward and backward. For example. 2442 and 111 are palindromes.If a number is selected at random from 1 to 1000.What is the probability that the number is a palindrome number?

Sorry I dont have options for this

- Two-digit palindrome : 9X1 = 9. First 9 calculates possibilities of 9 possible number from 1-9.
- Three-digit palindrome : 9*10*1 = 90. First 9 calculates possibilities of 9 possible number from 1-9, second 10 calculates all of the second digit possibilities. We can use 10 numbers from 0 to 9.
- Total probability : $$\frac{(9+90)}{1 to 1000 inclusive} = \frac{99}{1000}$$.

i think we will have to consider 1 to 9 also .. what do u think // answer will be 108/1000
Manager
Joined: 15 Dec 2015
Posts: 120
GMAT 1: 660 Q46 V35
GPA: 4
WE: Information Technology (Computer Software)
Re: A palindrome is a number that reads the same forward and backward. For [#permalink]

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06 Sep 2017, 08:32
septwibowo wrote:
DH99 wrote:
A palindrome is a number that reads the same forward and backward. For example. 2442 and 111 are palindromes.If a number is selected at random from 1 to 1000.What is the probability that the number is a palindrome number?

Sorry I dont have options for this

- Two-digit palindrome : 9X1 = 9. First 9 calculates possibilities of 9 possible number from 1-9.
- Three-digit palindrome : 9*10*1 = 90. First 9 calculates possibilities of 9 possible number from 1-9, second 10 calculates all of the second digit possibilities. We can use 10 numbers from 0 to 9.
- Total probability : $$\frac{(9+90)}{1 to 1000 inclusive} = \frac{99}{1000}$$.

Sorry I dont know the answer
Senior Manager
Joined: 02 Apr 2014
Posts: 451
Re: A palindrome is a number that reads the same forward and backward. For [#permalink]

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11 Dec 2017, 23:44
It is mentioned as from 1 to 1000, but not sure if it is inclusive

If inclusive, answer will be = 108/1000

if not inclusive, answer will be = 107/998
Re: A palindrome is a number that reads the same forward and backward. For   [#permalink] 11 Dec 2017, 23:44
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