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

What's a single-digit number with no value?

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

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

Find the value of "?" in the ball picture Riddle below:

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

You need to arrange three 7 and mathematical symbols to form number 1?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?