By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Solve the equation in the image by looking at the pattern closely.

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

I have feet, but no legs. Which animal Am I?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

Why 1729 is a magic number? Answer Logically.

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?