What has a ring but no finger?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

Find the next number in the series.
1 10 24 43 67 ?

If you say my name, I will no longer exist. What am I?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

You can see three almost identical images below. Can you spot the odd one out from them?

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?