Which of the following is rational number?
`(a) sqrt3`
`(b) sqrt5/5`
`(c) 2 sqrt2/sqrt2`
`(d) sqrt7`

Which of the following is irrational? (a) (2-sqrt3)2 (b) (sqrt2+sqrt3)2 (c) (sqrt2-sqrt3)(sqrt2+sqrt3) (d) (2sqrt7)/7

In each of the following determine rational number a and b:(sqrt(11)-sqrt(7))/(sqrt(11)+sqrt(7))=a-b sqrt(77) (ii) (4+3sqrt(5))/(4-3sqrt(5))=a+b sqrt(5)

An irrational number between 2 and 2.5 is sqrt(11) (b) sqrt(5) (c) sqrt(22.5) (d) sqrt(12.5)

Which of the following are rational or irrational no ;- (2+sqrt3)^2 , (5-sqrt3)^2

In each of the following determine rational number a and b:(3+sqrt(2))/(3-sqrt(2))=a+b sqrt(2) (ii) (5+3sqrt(3))/(7+4sqrt(3))=a+b sqrt(3)

sqrt7 - 3/5 sqrt7 + 2sqrt7

In each of the following determine rational number a and b:(sqrt(3)-1)/(sqrt(3)+1)=a-b sqrt(3)( ii) (4+sqrt(2))/(2+sqrt(2))=a-sqrt(b)