Replace the question mark with the correct number.

what does the below rebus means?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

What is black when you buy it, red when you use it, and gray when you throw it away?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

The cream is heavier than Milk. True or False?

Can you place six X (crosses) in below board without making three in a row in any way ?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

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

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