\(^{18}C_2\) का formula \(\frac{18\cdot17}{2}\) क्यों है, \(\frac{18\cdot17}{2!}\) से कैसे जुड़ा है?
Why is the formula for \(^{18}C_2\) \(\frac{18\cdot17}{2}\), and how is it connected to \(\frac{18\cdot17}{2!}\)?
Explanation opens after your attempt
Correct Answer
A. क्योंकि (2!=2)Because (2!=2)
Concept
The denominator in the pair formula is (2!), and (2!=2). In exams simplify pair formulas mentally.
Why this answer is correct
The correct answer is A. क्योंकि (2!=2) / Because (2!=2). The denominator in the pair formula is (2!), and (2!=2). In exams simplify pair formulas mentally.
Exam Tip
Pair formula में denominator (2!) ही होता है और (2!=2)। परीक्षा में pair simplification मानसिक रूप से करें।
Login to save your score, XP, coins and progress.