If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What occurs twice in a week, once in a year but never in a day?

What is the word or phrase?

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

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?

Why do we preferably have round manhole covers and not square ones?

What does the below rebus riddle means?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?