Using exactly three matchsticks, can you divide the area into two equal parts?

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

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

What seven-letter word has hundreds of letters in it?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

There are three Athletes (John, Tarun and Harish) and their individual Coaches (Jacob, Meenaxi and Priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Can anyone tell me a word in the English dictionary which has a silent 'z'?