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

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

What does below rebus means ?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

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?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?