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Answered on 11/12/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

Evaluate: 8! - 3!?

K.vaishali .

4x5x6x7x8=6720.
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Answered on 19/10/2020 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

Evaluate: 8! / 6! * 2!?

Vikas Kumar

8!/(6!*2!) = (8*7*6!)/(6!*2*1) = 8*7/2 = 4*7 = 28
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Answered on 28/11/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

Evaluate: 5! - 2!?

Debojyoti Roy

Tutor

118.
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Answered on 06/12/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

A coin is tossed 3 times and the outcomes are recorded. How many possible outcomes are there?

Sarvajeet Kumar

An Experienced Trainer

8.
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Answered on 06/12/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

How many 5 - digit telephone numbers can be constructed using the digits 0 to 9 if each number starts... read more
How many 5 - digit telephone numbers can be constructed using the digits 0 to 9 if each number starts with 67 and no digit appears more than once? read less

Sarvajeet Kumar

An Experienced Trainer

336.
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Answered on 02/12/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

Define permutation?

Abhilash

Teacher

In mathematics, the notion of permutation relates to the act of arranging all the members of a set into some sequence or order, or if the set is already ordered, rearranging (reordering) its elements, a process called permuting.
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Answered on 06/12/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

How many 3- digit numbers can be formed by using the digits 1 to 9 if no digit is repeated?

Rohit Singh

Commerce Master

9*8*7=504 types number can formed by using 1 to 9 digit of 3 digit numbers without repeated number.
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Answered on 06/12/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

How many words can be formed without repeating the words from the word MONDAY?

Sarvajeet Kumar

An Experienced Trainer

6! = 720.
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Answered on 30/11/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

Given 5 flags of different colours, how many different signals can be generated if each signal requires... read more
Given 5 flags of different colours, how many different signals can be generated if each signal requires the use of 2 flags, one below the other? read less

Abhilash Sharma

Teacher for 8th-12th)

5C2 *2! = 20 Out of 5 flags choosing any two will give you a signal. Now these flags can be interchanged (suppose red on top and blue below it, now blue on top and red below it) Hence 2! for this arrangement among these two colours themselves.
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Answered on 23/10/2016 Learn Permutations +2 Class XI-XII Tuition (PUC) Mathematics

What is the value of 7P6?

Debojyoti Roy

Tutor

7!/(7-6)! =7!/1! =7*6*5*4*3*2*1
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