Question

please solve it fast it's urgent ​

Answer 1

Answer:

Let us assume on the contrary that 5−  

3

 is  

rational. Then, there exist prime positive integers a  

and b such that

5−  

3  

=  

b

a  

⇒ 5−  

b

a  

=  

3  

⇒  

3  

 is rational [∵a,b are integers∴  

b

5b−a  

is a rational number]

This contradicts the fact that  

3 ​  

 is irrational.  

So, our assumption is incorrect. Hence, 5−  

3  

 is  

an irrational number.

Explanation:

Answer 2

Answer:

Lancelot De Mole was the inventor of Tank.

He was an Australian engineer and inventor.

The first tank prototype, Little Willie, was unveiled in September 1915.