13. three of four numbers have a sum of 22. the four numbers is 8, what is the fourth number?

-4

Step-by-step explanation:

Given : There are 4 numbers .

The sum of three numbers is 22

The sum of 4 numbers is 8.

To Find : The fourth number.

Solution :

Let first no. be w

Let second no. be x

Let third no. be y

Let fourth no. be z

Since we are given that The sum of 4 numbers is 8.

⇒w+x+y+z=8  ---(a)

We are also given that the sum of three numbers is 22

⇒w+x+y=22

Now put this value in a

⇒w+x+y+z=8

⇒22+z=8

⇒z = 8-22

⇒z = -14

Hence , The fourth number z is -4

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d