On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

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

Explain?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Solve the following series:
AZ, GT, MN, __, YB