Select the correct combination of mathematical signs to replace * signs and to balance the given equation.
555 * 5 * 11 * 25 * 4  

A tree increases annually by 1/8th of its height. By how much will it increase after 2 years, if it stands today 64cm high?

If two symbols, '÷' and '×' and the two numbers '2' and '8' are interchanged, what will be the value of the following equation?
4 ×8÷2=?

In the following question, correct the equation by interchanging the two signs.
6 ÷ 17 x 51 + 6 – 12 = – 4

By interchanging which two signs the equation will be correct?
9 + 6 × 2 ÷ 4 – 6 = 15

If + means - , - means ×, × means ÷, and ÷ means +, then what will be the value of following expression?
15 – 2 ÷ 90 × 9 + 10

Which of the following interchange of numbers and mathematical signs would make the given equation correct?
 30 ÷ 6 × 4 + 15−35 = 25

In the following question, by using which mathematical operator will the expression become correct?
18 ?6 ? 9 ? 27