What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

A Shopkeeper collects 71 rupees in the form of 20 paisa and 25 paisa.
He collects a total of 324 coins.

Can you tell me how many number of 20-paisa and 25-paisa he got?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

What is red and smells like blue paint?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

Bay of Bengal is in which state?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98