Question

There are 4 male and 3 female. This number of ways of selecting a person if either a male or female is​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

There are 7 ways of selecting a person

Step-by-step explanation:

Given:

Number of males = 4

Number of females = 3

To find:

We need to select one person:

Method:

Using Combination.

We know $^nC_r = \frac{n!}{r!(n-r)!}$ means choosing r things from n things.

Solution:

Here total people = No. of males + No. of females

                              = 4 + 3

                              = 7

Therefore, we need to select 1 person out of 7 people.

=> n = 7 and r = 1

Therefore, no. of ways = $7C_1$

                                      = $\frac{7!}{1! (7 -1)!}$

                                      = $\frac{7!}{6!}$

                                      = $\frac{7*6!}{6!}$

                                      = 7

Therefore, there are 7 ways of selecting a person