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The total number of positive 4-digit integers that can be fo
[#permalink]
18 Nov 2019, 09:02
18 Nov 2019, 09:02
Expert Reply
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Question Stats:
85% (00:31) correct
15% (01:18) wrong based on 20 sessions
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\(T = {2,3,5,6,7,8,9} \)
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Kudos for the right answer and solution.
Quantity A |
Quantity B |
The total number of positive 4-digit integers that can be formed where each digit is in set T and the 4 digits in each 4-digit integer are different from each other |
\((7)(6)(5)(4)\) |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Kudos for the right answer and solution.
Re: The total number of positive 4-digit integers that can be fo
[#permalink]
09 Apr 2020, 05:15
09 Apr 2020, 05:15
1
Carcass wrote:
\(T = {2,3,5,6,7,8,9} \)
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Kudos for the right answer and solution.
Quantity A |
Quantity B |
The total number of positive 4-digit integers that can be formed where each digit is in set T and the 4 digits in each 4-digit integer are different from each other |
\((7)(6)(5)(4)\) |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Kudos for the right answer and solution.
Here,
We have 7 integers, out of which we need 4 digit integer
For the 1st digit we can pick any number from the 7 integers, so no. of possible ways to choose = 7 ways
Similarly
For the 2nd digit, no. of ways = 6 ways
For 3rd, no. of ways = 5 ways
For 4th, no of ways = 4 ways
Therefore, The total number of positive 4-digit integers that can be formed (non repetitive) = (7)(6)(5)(4)
Option C
gmatclubot
Re: The total number of positive 4-digit integers that can be fo [#permalink]
09 Apr 2020, 05:15
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