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Subjects
Class 11MathematicsPermutations and CombinationsPermutationsEasy
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In how many ways can (2) pictures from (6) pictures be placed in first and second positions?

Answer and explanation

Correct answer: (30)

There are (6) choices for the first position and (5) for the second, so (6\times5=30). Count order when positions are distinct.

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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