Our product and our sum always give the same answer. Who are we?

81 x 9 = 801. What must you do to make the this equation true?

Replace the question mark with the correct number in the below-given picture?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.