\( \frac{20!}{18!\cdot2!} \) और \( \frac{19!}{17!\cdot2!} \) के अंतर का मान क्या है?
What is the difference between \( \frac{20!}{18!\cdot2!} \) and \( \frac{19!}{17!\cdot2!} \)?
Explanation opens after your attempt
B. (19)
Concept
The values are (190) and (171), so the difference is (19). For nearby terms, the difference often comes quickly.
Why this answer is correct
The correct answer is B. (19). The values are (190) and (171), so the difference is (19). For nearby terms, the difference often comes quickly.
Exam Tip
मान (190) और (171) हैं, इसलिए अंतर (19) है। निकट पदों में अंतर अक्सर जल्दी निकलता है।
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