I always drive my customer away.

Who am I?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

Can you replace the question mark with the correct number?

Can you find the mistake in the below statement?

I have branches, but no fruit, trunk or leaves. What am I?