What number should come in place of the question mark below?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

Can you make a six-letter word using the letters N, A and B ?

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

Can you solve the below tricky visual equation?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?