Question

prove that 1
$1 \div \sqrt{2}$
is irrational​

Answer 1

1/√2 is irrational number

( if the denominator of a number is divisible by either 2 or 7 (or) the number cant expressed in a p/q form (or) it's value is undefined are called irrational numbers)

√2 is divisible by 2

so it is an irrational number