Question

For rational numbers x and y, the number that always lies between x and y is
A) 2xy B) 2x C) x-y/2 D) x+y/2

Answer 1

Answer:

C) x-y/2

Step-by-step explanation:

For rational number x and y the number that always lie between x and y will be

\frac{x + y}{2}

2

x+y

for example, to find rational numbers between 10 and 11 we have to use the formula

\frac{x + y}{?2}

?2

x+y

OK, so

\frac{10 + 11}{2}

2

10+11

\frac{21}{2}

2

21

so we can find as many rational numbers we want using this formula