Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

What does the below rebus riddle means?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

What is more useful when it is broken?

Count the number of balls in picture below:

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

I throw two dice simultaneously.

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

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

What is red and smells like blue paint?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?