C. 4 / 4
ExplanationStep 1: Binomial coefficients for 4th power are 1 4 6 4 1. Step 2: Coefficient of a³b is 4. Step 3: Remember Pascal triangle coefficients.
Step 1: Binomial coefficients 4th power के लिए 1 4 6 4 1 होते हैं। Step 2: a³b का coefficient 4 है। Step 3: Pascal triangle coefficients याद रखें।
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