(10) अक्षरों में से (4) अक्षरों का चयन कितने तरीकों से हो सकता है?
In how many ways can (4) letters be selected from (10) letters?
Explanation opens after your attempt
C. (210)
Concept
Letters are only being selected, so \(\binom{10}{4}=210\). Use combination when arrangement is not asked.
Why this answer is correct
The correct answer is C. (210). Letters are only being selected, so \(\binom{10}{4}=210\). Use combination when arrangement is not asked.
Exam Tip
अक्षर केवल चुने जा रहे हैं इसलिए \(\binom{10}{4}=210\) होगा। व्यवस्था न पूछी जाए तो संयोजन लगाएं।
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