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Binomial Theorem
Binomial Expansion
jee_main_2026_april_2_shift_1
Grade 12

Question:

The coefficient of x^3 in the expansion of (1 + x)^5 is:
A. 5
B. 10
C. 15
D. 20

Step-by-Step Solution

Key Concept: Use the binomial theorem.
Step 1: Coefficient of x^3 = C(5, 3) = 10.
Correct Answer: B
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