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Class 11MathematicsPermutations and CombinationsPermutationsEasy
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How many (4)-digit numbers can be formed from digits (1,2,3,4,5) without repetition?

Answer and explanation

Correct answer: (120)

For four places, there are (5\times4\times3\times2=120) ways. Without repetition, choices keep decreasing.

Related tags

PermutationsClass11EasyPermutations And CombinationsMathematicsClass 11 Mcq
सुधार सुझाएँ / Earn

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  5. 5Three distinct prizes are to be awarded to seven students. No student can receive more than one prize. How many ways are possible?
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  7. 7What is the value of \(\frac{21!}{19!\cdot2!}-\frac{18!}{16!\cdot2!}\)?
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  9. 9What is the value of \(\frac{22!}{20!\cdot 2!}-\frac{21!}{20!}\)?
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