I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

Buy me, smell me or deliver me, I do not change.

Who am I?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT