How many different words can be formed using the letters of the word mississippi in which no two s are together?
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Given wird is MISSISSIPPI
Here I=4 times,S=4 times,P=2 times,M=1 time
∴∴ Required number of words =8C4×7!4!2!8C4×7!4!2!
⇒8C4×7×6!4!2!⇒8C4×7×6!4!2!
⇒7.8C4.6C4
Here I=4 times,S=4 times,P=2 times,M=1 time
∴∴ Required number of words =8C4×7!4!2!8C4×7!4!2!
⇒8C4×7×6!4!2!⇒8C4×7×6!4!2!
⇒7.8C4.6C4
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