There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

I am an odd number. Take away a letter and I become even. What number am I?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Can you count the number of triangles in the given picture?

What kind of tree can you carry in your hand?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

I am sure no one can have two things for dinner. what are they?