sqrt(5+sqrt(11+sqrt(19+sqrt(29)+sqrt(49))))=?

The greatest among sqrt(7) - sqrt(5) , sqrt(5) - sqrt(3) , sqrt(9) - sqrt(7) , sqrt(11) - sqrt(9) is

Which value among sqrt(11) + sqrt(5), sqrt(14) + sqrt(2), sqrt(8) + sqrt(8) is the largest?

Which of the following surd is the smallest ? sqrt(10)-sqrt(5),sqrt(19)-sqrt(14),sqrt(22)-sqrt(17) and sqrt(8)-sqrt(3)

sqrt(11)+sqrt(3),sqrt(20),sqrt(5)sqrt(15)+sqrt(22),sqrt(25),sqrt(10)3+sqrt(55),sqrt(15),sqrt(25)]|=

(sqrt(12)+sqrt(5)+sqrt(3))/(sqrt(12)-sqrt(5)-sqrt(3))+(sqrt(20)+sqrt(5)+sqrt(3))/(sqrt(20)-sqrt(5)-sqrt(3))

(sqrt(31) - sqrt(29))/(sqrt(31) + sqrt(29)) equals:

(sqrt(10)+sqrt(11)+sqrt(12))xx(sqrt(10)+sqrt(11)-sqrt(12))xx(sqrt(10)-sqrt(11)+sqrt(12))xx(sqrt(10)-sqrt(11)-sqrt(12))