By interchanging the given two signs and numbers which of the following equation will be correct?
 + and –, 7 and 3

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 42 * 4 * 69 * 3 * 29 * 60 * 5

Select the correct combination of mathematical signs to replace the * signs sequentially and balance the given equation.
 99 * 33 * 66 * 22 * 44 * 50

Direction: Some equations have been solved on the basis of certain system. Find the correct answer for the unsolved equation on that basis.

If 7 × 8 = 49, 4 × 4 = 12 and 6 × 4 = 18, what will 9 × 6 be?

Which of the following symbols should be placed in the blank spaces respectively (in the same order from left to right) in order to complete the given expression in such a manner that “D < A” definitely holds True?
A __ B __ C __ D

Which two numbers from amongst the given options should be interchanged to make the given equation correct?
 248 ÷ 4 + 184 ÷ ( 4 × 6 – 2 × 8) = 77

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 39 * 4 * 61 * 18 * 4 * 49 * 7 * 30

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 57 * 35 * 44 * 11 * 13 * 40