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How many ways 4 letters can be selected from The word RANDHEER (a) 4distinct (B) 2 Identical and 2 distinct

How many ways 4 letters can be selected from
The word RANDHEER
(a) 4distinct 
(B) 2 Identical and 2 distinct 

Grade:12th pass

2 Answers

Vikas TU
14149 Points
2 years ago
Hiii 
4 letters can be selected 
  1. All are distinct =7C4
  2. 2 identical and 2 distinct = 8C2/2! + 6C2
  3. Hope this will clear . we divide by 2 in 2nd because it is sameletter.
Manish kumar
36 Points
2 years ago
I think  2nd answer is not clear my doubts 
Whe have total 8 words in which 2 words(A,A)identical then 
In (2) 2 identical and 2 non identical 
So selection important 
2C2(for identical )
5C2 for non identical 
Then final answer =2C2×5C2

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