Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

What is the below Rebus indicate?

Can you name some countries which do not have the alphabet 'A' in them?

In the image given, you can find several triangles. Can you count them all?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

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