Question

which of the following is not a rational no when n=4 a)4n/n b)n-3/n÷3 c)n-4/n+4 d)n+4/n-4​

Answer 1

Answer:

d) is the correct answer

Step-by-step explanation:

n+4/n-4

= 4+4/4-4

8/0

A fraction with a denominator 0 is irrational.

Hope it helps you.

Answer 2

Answer:

d) n+4/n-4​

Step-by-step explanation:

applying n = 4 in n+4/n-4​

we get ( 4 + 4 ) / ( 4 - 4 )

= 8 / 0

for a number to be rational number, it has to be in p / q form where p and q are integers and q $\neq$0

here p = 8 which is integer

q = 0 which is also integer

but q = 0

so it is not rational

so d) n+4/n-4​ is not rational