How many triangles can you find in this given picture?

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:

When a clock is observed, the hour hand is at a minute mark and the minutes hand is six minutes ahead of it.

When the clock is observed again after some time, the hour hand is precisely on a different minute mark and the minute hand is seven minutes ahead of it.

Can you calculate how much time has elapsed between the two observations?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

I have no life, but I can die. What am I?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

What has a ring but no finger?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

If an electric train is travelling south, then which way is the smoke going?