Different string can be made from the letter of ORONO

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how many different string can be made from the letter of ORONO using some or all of letter???plese tell logic also..

Ravi Garg edited question

5 answers

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Dheeraj Kumar Choudhary (anonymous)

for three letter (6+6+1) = 13

for four letter (12+8) = 20

and for five letter 20

so total of (3+7+13+20+20) = 63

i hope it will help you.

Dheeraj Kumar Choudhary answered
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Sanjay Batra (anonymous)

how did u find for 2 letter

2 alike+2 diff ?

Sanjay Batra answered
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Dheeraj Kumar Choudhary (anonymous)

yes

Dheeraj Kumar Choudhary answered
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Sanjay Batra (anonymous)

then how 4,1,2

Sanjay Batra answered
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Dheeraj Kumar Choudhary (anonymous)

for choosing 2 alike there is only 1 way. and for 2 different is 1*2! = 2 way. and when you take 1 alike and 1 diff then 2 ways for choosing 1 word from diff and 1 way for choosing alike. so 2*1*2! because they are both different now.

Dheeraj Kumar Choudhary answered
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