exercise 7.3 (ncert class 11th maths)

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

11. In how many ways can the letters of the word PERMUTATIONS be arranged if the

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(i) words start with P and end with S, (ii) vowels are all together, (iii) there are always 4 letters between P and S?

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

10. In how many of the distinct permutations of the letters in MISSISSIPPI do the four I’s not come together?

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

9. How many words, with or without meaning can be made from the letters of the word MONDAY, assuming that no letter is repeated, if.

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(i) 4 letters are used at a time (ii) all letters are used at a time (iii) all letters are used but first letter is a vowel?

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

8. How many words, with or without meaning, can be formed using all the letters of the word EQUATION, using each letter exactly once?

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

7. Find r if (i) $^5P_r = 2\, ^6P_{r-1}$ (ii) $^5P_r = \,^6P_{r-1}$

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

6. Find n if $^{n-1}P_3 : \,^nP_4 = 1:9$

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

5. From a committee of 8 persons, in how many ways can we choose a chairman and a vice chairman assuming one person can not hold more than one position?

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

4. Find the number of 4-digit numbers that can be formed using the digits 1, 2, 3, 4, 5 if no digit is repeated. How many of these will be even?

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

3. How many 3-digit even numbers can be made using the digits 1, 2, 3, 4, 6, 7, if no digit is repeated?

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eduhilfe

Asked: July 7, 2020In: NCERT 11th Maths

2. How many 4-digit numbers are there with no digit repeated?

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11. In how many ways can the letters of the word PERMUTATIONS be arranged if the

10. In how many of the distinct permutations of the letters in MISSISSIPPI do the four I’s not come together?

9. How many words, with or without meaning can be made from the letters of the word MONDAY, assuming that no letter is repeated, if.

8. How many words, with or without meaning, can be formed using all the letters of the word EQUATION, using each letter exactly once?

7. Find r if (i) $^5P_r = 2\, ^6P_{r-1}$ (ii) $^5P_r = \,^6P_{r-1}$

6. Find n if $^{n-1}P_3 : \,^nP_4 = 1:9$

5. From a committee of 8 persons, in how many ways can we choose a chairman and a vice chairman assuming one person can not hold more than one position?

4. Find the number of 4-digit numbers that can be formed using the digits 1, 2, 3, 4, 5 if no digit is repeated. How many of these will be even?

3. How many 3-digit even numbers can be made using the digits 1, 2, 3, 4, 6, 7, if no digit is repeated?

2. How many 4-digit numbers are there with no digit repeated?

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