Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What is the last thing you take off before bed?

Spot what is wrong here in below Picture?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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?

What does this mathematical rebus means ?

How can you tell a raw egg from a hard-boiled egg?