You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

What happened when the wheel was invented?

What number divided by 4 is the same as that number minus 4?

what does this below rebus represent identXQQQQQME

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Can you spot the man between the coffee bean in the picture below ?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches