The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilt some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

What has hands, but can’t clap?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

A pet show was happening in my locality. I went down along with my kids. In that show, I noticed that all except two of the entries were cats. All except two were dogs and all except two were Monkeys.

Can you find out how many of each animals were present in that pet show?

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