What is the value of ${^{81}P}_2-{^{81}C

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Permutation

Question:

What is the value of ${^{81}P}_2-{^{81}C}_2$?

Options:

6480

3240

2775

5040

Correct Answer:

3240

Explanation:

${^{81}P}_2-{^{81}C}_2$ = 6480 - 3240 = 3240

The correct answer is Option (2) → 3240