Replace the question mark with the correct number in the below-given picture?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

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 was drowned by he was not wet. How?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?