The number of permutations which can be formed out of the letters of the word " SERIeS " taking three letters together , is :

120

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Text solutionVerified

The number of letter = 6

taking three letters together

Required number of permutation

P_{3}^{6}

= \frac{6 !}{( 6.3 ) !}

= \frac{6 !}{3 !}

= \frac{6 \times 5 \times 4 \times 3 !}{3 !}

= 6 \times 20 = 120

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Question Text	The number of permutations which can be formed out of the letters of the word " SERIeS " taking three letters together , is :
Answer Type	Text solution:1
Upvotes	150