Mathematics - Permutation & Combination Question with Solution | TestHub

MathematicsPermutation & CombinationFundamental PrincipleEasy2 minQB

MathematicsEasyinteger

Nine hundred distinct $n$ -digit numbers are to be formed using only the 3 digits $2, 5, 7$ . The smallest value of $n$ for which this is possible is

Answer:

Solution:

$3^{n} \geq 900 \Rightarrow n \geq 7$

Stream:JEESubject:MathematicsTopic:Permutation & CombinationSubtopic:Fundamental Principle

⏱ 2mℹ️ Source: QB

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