How many different 10-letter words (real or imaginary) can be formed from the following letters? o, z, q, y, n, u, z, j, w, v ten-letter words (real or imaginary) can be formed with the given letters. (type a whole number.)

1814400

Step-by-step explanation:

The given letters : O, Z, Q, Y, N, U, Z, J, W, V

Number of letters = 10

Here Z is repeated two times.

The number of permutations of n things , where a are repeated items , b are repeated items  and so on :-

Then, the number of ten letter words can be formed by given 10 letters , where Z is repeated 2 times :-

Hence, the number of different 10-letter words (real or imaginary) can be formed =1814400

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.

is means division by fractions

step-by-step explanation: