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

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

A man dies of old age on his 25 birthday. How is this possible?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

Whats the next number in the below number sequence pattern.

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

What does this Rebus Picture mean?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?

Why did Navjot Singh Sidhu put the new January calendar in the freezer