Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Which is the smallest number that you can write using all the vowels exactly once?

What does below Rebus mean ?

esgg sgeg gegs gsge

I’m tall when I’m young, and I’m short when I’m old. 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.

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

What do you see in the given picture?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

In which direction should the missing arrow point?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?