What will be the major product obtained when isobutene under goes reaction with HBr?
`CH_(3)-underset(CH_(3))underset(|)(C)=CH_(2)+HBr rarr`?

Explanation

To determine the major product obtained when isobutene (2-methylpropene) reacts with HBr, we can follow these steps:

### Step 1: Identify the structure of isobutene
Isobutene has the following structure:
```
CH3
|
CH2=C
...