What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

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

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

How many sides does a circle have?

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

In the given picture, in how many ways can you read the word "Tiger"?