Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

In the four images below, can you find the odd one out?

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Christina makes tasty toast in a small pan. After toasting one side of a slice, she turns it over. Each side takes 30 seconds. The pan can only hold two slices.
How can she toast both sides of three slices in 1 & 1/2 instead of 2 minutes?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

You need to remove two matchsticks to make the below equation true. Can you do it ?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?