How many times in a given day, minutes and hour clock comes in a straight line ?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

Can you solve the below geography rebus by decoding the below rebus ?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

John was piloting a plane behind a car but was never able to overtake it. Why?

How do you go from 98 to 720 using just one letter?

Find the next number in the series.
1 10 24 43 67 ?