- How many combinations are there with 11 numbers?
- How many combinations of 5 are there?
- How many combinations of 7 items are there?
- How many combinations of 3 items are there?
- How do you write numbers?
- What 4 numbers add up to 8?
- How many ways can you make 12?
- What is the sum of all numbers from 1 to 100?
- What 4 numbers make 100?
- How do I teach a friend of 10?
- What is the sum of 51 to 100?
- What are the sums of 11?
- How many ways can you make 10?
- What are the odds of guessing a 10 digit number?
- How many 4 letter combinations are there?
- How many combinations of 6 items are there?
- How can you make a sum of 15?

## How many combinations are there with 11 numbers?

99 combinations2.

See for 11 numbers there can be 9 ways for each number for 1st nine places since 0 can’t be the fist number and next two are repeated from 10 numbers hence 10!/2.

So 99 combinations have 10!/2.

Permutations hence total ways are 99*10!/2!.

## How many combinations of 5 are there?

Hence there are 2 choices for the fourth digit and only 1 choice for the fifth digit. Thus you have made 5 × 4 × 3 × 2 1 = 120 choices and there are 120 possible 5 digit numbers made from 1, 2, 3, 4 and 5 if you don’t allow any digit to be repeated. Now consider the possibilities with 13 as the first two digits.

## How many combinations of 7 items are there?

127The number of combinations that are possible with 7 numbers is 127.

## How many combinations of 3 items are there?

3*3*3=27 unique possibilities.

## How do you write numbers?

Numbers can be written either as words (e.g., one hundred) or numerals (e.g., 100). In this article we follow the guidelines of APA Style, one of the most common style guides used in academic writing. In general, words should be used for numbers from zero through nine, and numerals should be used from 10 onwards.

## 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

## How many ways can you make 12?

5 Answers. There are 89 ways (and 89 is the 11th Fibonacci number). You’re looking for “restricted compositions” of 12 (the restriction being that each part is at least 2). Searching for that on OEIS gives A212804 as the sequence.

## What is the sum of all numbers from 1 to 100?

The sum of the numbers 1-100 would be equal to the number of pairs (50) multiplied by the sum of each pair (101), or 50 x 101 = 5,050.

## What 4 numbers make 100?

Using the numerals 1,7,7,7 and 7 (a “1” and four “7”s) create the number 100.

## How do I teach a friend of 10?

Explicit Instruction/Teacher modelingWrite 5 + 5 = 10 on the board.Then, write 10 = 5 + 5.Ask your students what they notice about the two math sentences.Explain that when the ten is written first, it is called decomposing. or breaking a big number into smaller numbers.Write 10 = 4 + ____ on the board.More items…

## What is the sum of 51 to 100?

The number series 51, 52, 53, 54, . . . . , 99, 100. Therefore, 3775 is the sum of positive integers between 51 and 50.

## What are the sums of 11?

NumberRepeating Cycle of Sum of Digits of Multiples10{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}13{4,8,3,7,2,6,1,5,9}8 more rows

## How many ways can you make 10?

11 waysThere are 11 ways to make ten.

## What are the odds of guessing a 10 digit number?

These 10 numbers are the numbers 0–9, inclusive. So the combination can be 000000 or 999999, or anything in between. Since the odds of getting each digit is 1/10, you multiply 1/10 by itself 6 times. There’s literally a one in a million chance of guessing the PIN correctly.

## How many 4 letter combinations are there?

256reto wrote: How many different 4 letter combinations can be created from the letters A,B,C, and D? This is a case of number of arrangements possible with repetition. Thus you have 4 options each for the 1st,2nd,3rd and 4th letter giving you a total of 4*4*4*4 = 256 number of possible combinations.

## How many combinations of 6 items are there?

720 possible combinationsIt’s the same as possibilities to a 6 digit code with known numbers and no repeats. With 1 item there are 6 possibilities with 2 you only have 5 choices after the first if you don’t repeat the same item. So for 6 items the equation is as follows 6*5*4*3*2= 720 possible combinations of 6 items.

## How can you make a sum of 15?

The possible number whose combination would result in sum of 15 are: 69, 78, 87, 96. So, there are only 4 combinations which would result in 15.