Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

In the picture given below, can you find out which digit will take place of the question mark?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

Can you make a six-letter word using the letters N, A and B ?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

What does below pictogram mean?