Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
 35 * 5 * 7 * 2 * 19 = 42

If I denotes ‘÷’, J denotes ‘×’, K denotes ‘−’ and L denotes ‘+’, then what will come in place of ‘?’ in the following equation?
 42 L 18 K (7 J 4) L (21 I 3) J 9 L 22 = ?

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 34 * 4 * 15 * 51 * 27 * 9 * 40

By interchanging the given two signs which of the following equation will be not correct?
 + and –

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

Select the c orrect combination of mathematical signs to replace the * signs and to balance the given equation.
 78 * 3 * 12 * 5 * 59 * 17 * 44 

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

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

        64 + 7 = 460

        43 + 8 = ?

        25 + 8 = 212