Which of the following is irrational? (a)`sqrt(4/9)` (b) `4/5` (c) `sqrt(7)` (d) `sqrt(81)`

Which of the following is irrational? sqrt((4)/(9))(b)(4)/(5)(c)sqrt(7)(d)sqrt(81)

Prove that the following irrationals ? 7 sqrt(5)

Prove that the following are irrationals : 7sqrt5

Prove that the following are irrationals:(ii) 7sqrt5

Prove that the following are irrationals : 7sqrt(5)

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

Which of the following number is irrational a. sqrt(4/9) b. 8/(27)3 c. (7pi)/(22) d. pi+sqrt(16-8pi+pi^2)

Which of the following number is not irrational ?(i)(2)/(sqrt(3)),(sqrt(3))/(4),sqrt((25)/(49)),7sqrt(2)

Prove that the following are irrational. sqrt3 +sqrt5

Prove that the following are irrational. sqrt3 +sqrt5