Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

If eleven plus two equals one, what does nine plus five equal?

Move four matchsticks to the below square to form three squares?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

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?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?