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Recent questions tagged counting

1 1 vote
1 1 answer
420
420 views
GATE ECE 2010 | Question: 64
Given digits $2,2,3,3,3,4,4,4,4$ how many distinct $4$ digit numbers greater than $3000$ can be formed?$50$$51$$52$$54$
17 17 votes
6 answers 6 answers
1.3k
1.3k views
GATE ECE 2014 Set 4 | GA | Question: 10
A five digit number is formed using the digits $1,3,5,7$ and $9$ without repeating any of them. What is the sum of all such possible five digit numbers?$6666660$$6666600$...
6 6 votes
4 answers 4 answers
802
802 views
GATE ECE 2017 Set 2 | GA | Question: 9
The number of $3$-digit numbers such that the digit $1$ is never to the immediate right of $2$ is$781$$791$$881$$891$
8 8 votes
2 answers 2 answers
668
668 views
GATE ECE 2017 Set 1 | GA | Question: 9
There are $3$ Indians and $3$ Chinese in a group of $6$ people. How many subgroups of this group can we choose so that every subgroup has at least one Indian?$56$$52$$48$...
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