Keyboard words are not in alphabetical order, Why?

What 5-letter word typed in all capital letters can be read the same upside down?

There are three boxes which are labeled as Rs100, Rs150, and Rs200. One box contains two notes of Rs. 50. The second box contains one note of Rs50 and one note of Rs100 The third box contains two Rs. 100 notes. All boxes are labeled incorrectly.

What is the minimum number of boxes you must check in order to label all boxes correctly?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

An explorer goes on an exposition in the jungle. He sets up camp in the middle of the jungle. The next morning he sees something with a head and a tail, but he is not afraid. What did he see in his bag?

Why is the longest human nose just 11 inches?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

Below rebus represent famous DiCaprio movie. Can you name it?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211