Why Aeroplane windows are round?

Five teams were competing in cricket where they faced each other exactly once. After the tournament, the following is the point table.

DareDevils 6
SuperKings 5
Royals 4
Sunrisers 2
Riders ?

How many points did Riders end up with?

Can you place three balls such that the equation shown in the picture holds true?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

What can you deduce from the following BrainBat?

CRY
LMKI

what does the below rebus means?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?