C. 9 / 9
ExplanationStep 1: nC1 means choosing 1 object from n objects. Step 2: 9C1 = 9. Step 3: nC1 is always equal to n.
Step 1: nC1 का मतलब n objects में से 1 चुनना है। Step 2: 9C1 = 9 होता है। Step 3: nC1 हमेशा n के बराबर होता है।
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