- What two numbers equal 18?
- What 4 numbers add up to 8?
- What numbers can you add to get 10?
- What 5 numbers add up to 31?
- What numbers make up 15?
- What 4 numbers add up to 14?
- What 4 numbers add up to 10?
- How many codes can 4 numbers make?
- What is a sum of 14?
- What three numbers make 15?
- What three numbers add up to 21?
- Is the number 15 a composite number?

## What two numbers equal 18?

Answer and Explanation: 1 * 18 = 18.

2 * 9 = 18 and.

2 * 6 = 18..

## What 4 numbers add up to 8?

Draw blobs (or any shapes you like) to show how these two numbers make up 8.8 = 1 + 78 = 2 + 68 = 3 + 58 = 4 + 48 = 5 + 38 = 6 + 28 = 7 + 1

## What numbers can you add to get 10?

Because 10 is already a 10, the only number you could add to 10, and still have a 10 in the end, is 0.

## What 5 numbers add up to 31?

1, 3, 9, AND 18 MAKE 31 IN TOTAL & YOU CAN MAKE EVERY NUMBER UPTO 31 USING THEM. YOU CAN SOLVE THIS BY ADDING 18 WITH 9 & 4.

## What numbers make up 15?

15 is a composite number. 15 = 1 x 15 or 3 x 5. Factors of 15: 1, 3, 5, 15. Prime factorization: 15 = 3 x 5.

## What 4 numbers add up to 14?

When you say ‘4 number combinations’ are you talking like 0059 or 0842 or 6035. … If you are looking for 4 separate numbers that total 14, like 10+2+1+1, then there are 23:11 + 1 + 1 + 1 = 14 10 + 2 + 1 + 1 = 14 9 + 3 + 1 + 1 = 14 9 + 2 + 2 + 1 = 14.More items…

## What 4 numbers add up to 10?

NumberRepeating Cycle of Sum of Digits of Multiples9{9,9,9,9,9,9,9,9,9}10{1,2,3,4,5,6,7,8,9}11{2,4,6,8,1,3,5,7,9}12{3,6,9,3,6,9,3,6,9}8 more rows

## How many codes can 4 numbers make?

There are 10,000 possible combinations that the digits 0-9 can be arranged into to form a four-digit code.

## What is a sum of 14?

If any numbers can be used, the answer is infinity. If only positive integers greater than or equal to 0 are allowed, the answer is 120. If the digits in a 3-digit integer must add to 14, the answer is 70.

## What three numbers make 15?

You can also achieve 15, if you add the middle number 5 three times. The odd numbers 1,3,7, and 9 occur twice in the reductions, the even numbers 2,4,6,8 three times and the number 5 once. Therefore you have to place number 5 in the middle of the magic 3×3 square.

## What three numbers add up to 21?

Therefore, three consecutive integers that add up to 21 are 6, 7, and 8.

## Is the number 15 a composite number?

which is not prime (i.e., which has factors other than 1 and itself). The first few composite numbers (sometimes called “composites” for short) are 4, 6, 8, 9, 10, 12, 14, 15, 16, … There are an infinite number of composite numbers. …