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## #1 2017-11-02 17:11:50

**shakeel123****Moderator**- Registered: 2017-09-21
- Posts: 50,796

### In the expansion of (a – 2b)³ the coefficient of b² is?

# ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Mathematics Induction and Binomial Theorem

**Question:**

In the expansion of (a – 2b)³ the coefficient of b² is

**Option A):**

-4a**Option B):**

-8a**Option C):**

-2a²**Option D):**

12a

**Correct Answer is Option D):**

12a

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## 2017-11-02 17:11:50

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### Re: In the expansion of (a – 2b)³ the coefficient of b² is?

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