Can anyone tell me a word in the English dictionary which has a silent 'z'?

Can you find the missing piece of the Porsche?

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

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

In the given picture, in how many ways can you read the word "Tiger"?

Replace the question mark with the correct number in below Picture:

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?