Answer: drag the first one to the fourth one, drag the second one to the first one,drag the third one to the second one,drag the fourth one to the third one.

Step-by-step explanation:if its wrong then im sorry

3 0

3 years ago

Out of 50 students15 are taking english and 30 are taking chemersry. How many students are taking chemistry and not english

stepan [7]

5 students. 15 + 30 is 45, so the remainder is 5

4 0

3 years ago

The number of permutations of n elements taken r at a time is given by the formula ________.

kondor19780726 [428]

Answer:

$P(n,r) = \dfrac{n!}{(n-r)!}$

Step-by-step explanation:

We have to fill the blank.

The number of permutations of n elements taken r at a time is given by the formula:

$P(n,r) =^nP_r = \dfrac{n!}{(n-r)!}$

Permutation is an arrangement of subsets of a larger set in regard with order of the arrangement.

where n is the the larger set and we have to choose r items from n such that there is no repetition.

In permutation, order is important.

8 0

4 years ago