What is the major organic product obtained from the following sequence of reactions?

Question

Quizplus · Accepted Answer

The sequence of reactions starts with the reaction of 2-methylpropene with hydrogen iodide to give 2-iodo-2-methylpropane (tert-butyl iodide). This is then subjected to substitution reaction with sodium iodide in acetone to give 1-iodo-2-methylbutane. Further reaction with another equivalent of sodium iodide in acetone will result in substitution at another position to give 1-iodo-3-methylbutane.

What Is the Major Organic Product Obtained from the Following