John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

The answer I give is yes, but what I mean is no. What was the question?

One day Jenifer meets the Lion and the Tiger in the Forest of Forgetfulness. She knows that the Lion lies on Mondays, Tuesdays, and Wednesdays, and tells the truth on the other days of the week. The Tiger, on the other hand, lies on Thursdays, Fridays, and Saturdays, but tells the truth on the other days of the week. Now they make the following statements to Jenifer:

Lion: Yesterday was one of my lying days.

Tiger: Yesterday was one of my lying days too.

What day is it?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

What is more useful when it is broken?

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

What number when divided in half becomes zero?

What can you hold in your right hand, but never in your left hand?

You need to remove four matchsticks from the picture below and still need to maintain the following as in the original image.
1. 1st row contains 12 matchsticks
2. 2nd row contains 12 matchsticks
3. 1st column contains 12 matchsticks
4. 2nd column contains 12 matchsticks

Why is 6 afraid of 7?