Question

ten of the people in francisco's family know how to ride bike and 7 of them know how to ride a horse, 4 people know both how to ride a bike and a horse. how many people know how to ride a horse but not a bike​

Answer 1

Answer:

easy 3

Step-by-step explanation:

using set theory

we get the answer 3

Answer 2

Given :

Ten of the people know how to ride bike

7   know how to ride a horse,

4 people know both how to ride a bike and a horse.

To Find :  how many people know how to ride a horse but not a bike​

Solution:

n( B) = 10  number of people know how to ride bike

n ( H) = 7   number of people know how to ride horse

n ( B ∩ H) = 4    number of people know  know both how to ride a bike and a horse.

Number of People know how to ride a horse but not a bike​

= n ( H ) -  n ( B ∩ H)

= 7 - 4

= 3

Hence 3 people know how to ride a horse but not a bike

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