What is common among 11, 69, and 88?

What is more useful when it is broken?

Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

What is the unique property of the following words ?
* Revive
* Banana
* Grammar
* Voodoo
* Assess
* Potato
* Dresser
* Uneven

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Why do we preferably have round manhole covers and not square ones?