Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

I am sometimes honest
Sometimes dishonest
I can be sweet and also bitter
I can hurt you real bad and
also make u smile and blush ☺️
What am I?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

What do you see in the image below