Why Aeroplane windows are round?

Can you solve the photo plexer logic ?

Different lights make me strange by changing me into different sizes. What am I?

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?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

What is the next shape from answers A, B, C, and D figure?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?