Table of Contents

- 1 How many combinations are there with 2 letters and 2 numbers?
- 2 How many ways the three digits 1/2 and 3 can be arranged if repetition is allowed?
- 3 How many 3 digit numbers can be formed if repetition is allowed?
- 4 How many 2 digit number combinations are there?
- 5 How many three letter words can be constructed with English alphabet when repetitions Cannot?
- 6 How many combinations of 2 characters are there?
- 7 How many digits do we have to arrange three positions?
- 8 How many letters and digits are on a license plate?

## How many combinations are there with 2 letters and 2 numbers?

325 possible combinations

There are 325 possible combinations with two letters.

## How many ways the three digits 1/2 and 3 can be arranged if repetition is allowed?

The first digit of the 3-digits can take 7 distinct values: 1, 2, 3, 4, 5, 7, 9. As repetition is allowed, the second digit can also take 7 distinct values, and the third can take 7 distinct values aswell, giving a total of 7⋅7⋅7=343 distinct combinations of numbers.

**How many 2 letter combinations are possible from the letters in the word math?**

Therefore, there can be 6 different two-letter combinations of the word MATH.

### How many 3 digit numbers can be formed if repetition is allowed?

Now, if you consider repetition allowed, all the numbers from 100 to 999 are 3 digit numbers. How many numbers are formed? count numbers starting from 100 upto 999. Hence, 900 numbers are formed.

### How many 2 digit number combinations are there?

Hi Angela, I also know that there are 100 combinations of two digits from 0-9, and 10 ombinations of one digit from 0-9. How do I know this?

**How many license plates can be made consisting of two letters followed by two digits?**

since repetition is allowed the number of licence plates you could make is 4.

#### How many three letter words can be constructed with English alphabet when repetitions Cannot?

So, the required number of 3-letter words =(5×4×3)=60. (ii) When repetition of letters is allowed, each place can be filled by any of the 5 letters in 5 ways. ∴ the required number of ways =(5×5×5)=125.

#### How many combinations of 2 characters are there?

This list of all two-letter combinations includes 1352 (2 × 262) of the possible 2704 (522) combinations of upper and lower case from the modern core Latin alphabet.

**How many different types of permutations can be created with 26 letters?**

Since repetitions are allowed, we have that for each letter used, 26 still remain for the next choice, and for each digit used, 10 still remain for the next choice. Hence, by the multiplication principle, the total different number of letter permutations is 26 ×26 ×26 = 17576 and the total number of digit permutations is 10 ×10 × 10 = 1000

## How many digits do we have to arrange three positions?

We have 9 digits from which toarrange three digits in the next three positions, given that thedigit 0 cannot be used. C. From a class of 20 students, a committee of 3 is to be formed toorganize a fundraiser. 6. If all 20 students are eligible for committee membership, how manydifferent committees could be formed?

## How many letters and digits are on a license plate?

License plates are made using 2 letters followed by 3 digits. How many different plates can be made if repetition of letters and digits is allowed? A license plate is to consist of 2 letters followed by 3 digits. Determine the number of different license plates possible if repetition of letters and numbers is not permitted?

**How many possible digits are there in a number system?**

There are 10 possible digits for the numbers (0,1,2,…,9), and 26 possible letters (A,B,C,…..,Z). Since repetitions are allowed, we have that for each letter used, 26 still remain for the next choice, and for each digit used, 10 still remain for the next choice.