Find the 8 in the below-given Image.

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Count the number of squares in the picture below.

I have Rs.50 and I spend it in the way as below.

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

The King of a distant land had heard that Birbal was one of the wisest men in the East and so desired to meet Birbal. He sent Birbal an invitation to visit his country.

In due course, Birbal arrived in the distant kingdom. When he entered the palace he was flabbergasted to find not one but six kings seated there. All looked alike. All were dressed in kingly robes. Who was the real king?

The very next moment he got his answer. Confidently, he approached the king and bowed to him.

How did Birbal know who was the real king?

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?