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UPSC NDA I 2014 Mathematics Paper
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© examsnet.com
Question : 20
Total: 120
How many different words can be formed by taking four letters out of the letters of the word ‘AGAIN’ if each word has to start with A?
[NDA I 2014]
6
12
24
None of the above
Validate
Solution:
The letters are 2A, G, I, N
If number starts with A then 4 other letters are left to use
The number of ways
4
!
=
24
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