When 99 is considered higher than 100?

There are forty elephants and they have forty-fore heads. How can this be possible?

What is the fastest way to double your money?

What Deficiency does the below rebus represent?

VIT_MIN

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

If an electric train is travelling south, then which way is the smoke going?

A man escapes from jail using help from his girlfriend. The investigators suspect four girls of being the man's girlfriend.

Out of those four girls, one is his girlfriend who is lying. Two of the girls are completely innocent and are speaking the truth. One of the girls is the man's sister who is helping the girlfriend lie. Following are the statements from all four of them:

Ariana: "Myrna is his girlfriend."
Jane: "Angelina is lying."
Angelina: "Ariana is lying."
Myrna: "Jane is not his sister."

Can you find out who is the man's sister among them?

John can eat 27 chocolates in an hour, Jacob can eat 2 chocolates in 10 minutes, and Jolly can eat 7 chocolates in 20 minutes. How long will it take them to share and eat a box of 120 chocolates whilst playing Chess?

what's the probability of getting a king or a queen from a pack of 52 cards?

2, 3, 5, 9, 17, _ What is the next number in the sequence?