What is next number in the pattern below:

131 517 192 123 ?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

How many triangles are there in the picture below?

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Find the next number in the sequence

5 12 24 36 ?