अक्षरों (A,B,C,D) में से (3) अक्षर लेकर कितने क्रम बनाए जा सकते हैं?
How many ordered arrangements can be made by taking (3) letters from (A,B,C,D)?
Explanation opens after your attempt
C. (24)
Concept
The answer is \({}^{4}P_{3}=4\times3\times2=24\). Choosing and arranging in order is permutation.
Why this answer is correct
The correct answer is C. (24). The answer is \({}^{4}P_{3}=4\times3\times2=24\). Choosing and arranging in order is permutation.
Exam Tip
उत्तर \({}^{4}P_{3}=4\times3\times2=24\) है। चुनना और क्रम में रखना permutation है।
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