Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Why did the Girl throw the butter out of the window?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

What is the largest number you can write with just 3 digits?

I have Rs.50 and I spend it in the way as below.