Can it be possible to build a house that has all its four walls facing towards the South?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

Can you make four (4) nines (9) equal 100?

Can you find the hidden animal in the picture below?

The dirtier I get, the whiter I look. Who am I?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

I can be cracked, made, told, and played. What am I?

Prove that the below maths equation is true.

8 + 8 = 91

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()