What is the word or phrase below?
R | E | A | D

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

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

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Optical Illusion Eye Test: You Have A Brain Like Computers If You Can Spot Two B's Among R's In 8 Seconds!

Readers with high attention to detail can spot the mistake in the stack of shoes in 5 seconds. Are you one of them? Test your visual skills now!

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?