3. If he this computer, he'll be able to have the quickest way to get the necessary information.

3. If he this computer, he'll be able to have the quickest way to get the necessary information.

BUY

Используем условное предложение первого типа (First Conditional), так как речь идет о возможном будущем событии.

Ответ: If he buys this computer, he'll be able to have the quickest way to get the necessary information.