If √1+55/729=1+x/27 then the value of x is :

What will come in place of both the question marks(?) in the following question?

 (?)¹·³/45 = 75/(?)¹·7

(4356)1/2 ÷ 11/4=√? X6

100 x 10 -100+2000÷100 =?

2 1/9 * 1 2/19 ÷ 2 ? =?-1½

If a * b – 2a – 3b + ab, then 3 * 5 + 5 * 3 is equal to:

If x = (7 - 4√3),then the value of (x + 1/x) is:

If 4x + 3y = 18xy and 2x – 5y + 4xy = 0, then the value of x and y will be respectively:

74x 25-33x 45=?

By how much does √12 + √18 exceed √3 + √2 ?