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shubham kumar
 
Reply Thu 24 Apr, 2014 01:27 pm
the sum of the digit in the unit place of all the number formed with the help of 3,4,5,6 taken all at a time is ?
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Type: Question • Score: 1 • Views: 831 • Replies: 1
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markr
 
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Reply Thu 24 Apr, 2014 05:54 pm
@shubham kumar,
Do you mean that if you permute the digits 3, 4, 5, and 6 to create 24 4-digit numbers, what is the sum of the 24 units digits?

Six of them (1/4) will be 3, six of them will be 4, six of them will be 5, and six of them will be 6.
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