अक्षरों (P,Q,R,S,T,U) से बिना पुनरावृत्ति कितने (2)-अक्षरी कोड बनेंगे?

How many (2)-letter codes can be formed from (P,Q,R,S,T,U) without repetition?

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Correct Answer

B. (30)

Step 1

Concept

\({}^{6}P_{2}=6\times5=30\) codes are possible. In a code, changing the position of letters changes the code.

Step 2

Why this answer is correct

The correct answer is B. (30). \({}^{6}P_{2}=6\times5=30\) codes are possible. In a code, changing the position of letters changes the code.

Step 3

Exam Tip

\({}^{6}P_{2}=6\times5=30\) कोड बनेंगे। कोड में अक्षर का स्थान बदलने से कोड बदलता है।

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अक्षरों (P,Q,R,S,T,U) से बिना पुनरावृत्ति कितने (2)-अक्षरी कोड बनेंगे? / How many (2)-letter codes can be formed from (P,Q,R,S,T,U) without repetition?

Correct Answer: B. (30). Explanation: \({}^{6}P_{2}=6\times5=30\) कोड बनेंगे। कोड में अक्षर का स्थान बदलने से कोड बदलता है। / \({}^{6}P_{2}=6\times5=30\) codes are possible. In a code, changing the position of letters changes the code.

Which concept should I revise for this Mathematics MCQ?

\({}^{6}P_{2}=6\times5=30\) codes are possible. In a code, changing the position of letters changes the code.

What exam hint can help solve this Mathematics question?

\({}^{6}P_{2}=6\times5=30\) कोड बनेंगे। कोड में अक्षर का स्थान बदलने से कोड बदलता है।