Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Find the number of squares in the below picture

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

What is the largest number you can write with just 3 digits?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?