Question

which one of the following is an irrational number a) √25 b) √19 c) 1.345 d) 1.010101..........

Answer 1

B


because the property of irrationals numbers are non terminating and non recurring .
if y find the square root of 19. you will find that the square root is non terminating and non recurring so it is irrational number

i hope you understand it

Answer 2

sq. root of 19 is 4.35889894354067397586..................
this is non-terminating and recurring
so, 19 is an irrational number