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?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What question can you never answer yes to?

How can you make number one disappear by adding something to it?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

Can you make four (4) nines (9) equal 100?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?