In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.
3 x 4 x 5 = 435,   4 x 3 x 2 = 342,      2 x 3 x 4 = ?

• 324

• 242

• 432

• 432

If + means , − means x, x means − and  means +, which of the following will be the value of expression 

• 16

• 28

• 32

• 32

If 4 x 9 = 25
   7 x 4 = 53
then 9 x 4 = ?

• 81

• 83

• 85

• 85

A*B means multiply A by B; A@B means divide A by B, A ? B means add B to A and A=B means subtract B from A. Then find the value of 10*10 = 5*10 ? 50 @10.

• 100

• 45

• 1000

• 1000

If 37*14 = 17, 69*33 = 34, 91*125 = 72 then what should 28*56 = ?

• 26

• 42

• 34

• 34

Which of the following interchange of signs would make the equation correct?
5 + 3 x 8 - 12 ÷ 4 = 3

• - and ÷

• + and x

• + and ÷

• + and ÷

Select the correct combination of mathematical signs to replace * signs and to balance the equation.
48 * 4 * 6 * 3 * 30

• -, +, =, x

• ÷, =, x, +

• ÷, +, x, =

• ÷, +, x, =

If '+' means subtraction, '÷' means addition, '<' means multiplication and '>' means division, then find the value of the given statement, 9 ÷ 7 < 8 > (4>2) + 5 

• 32

• 18

• 16

• 16

If 5 * 3 = 19 and 8 * 5 = 49, then what should 6 * 4 be?

• 24

• 28

• 18

• 18

20.

If '+' stands for 'multiplication', '-' stands for 'addition', 'X' stands for 'division' and '÷' stands of 'subtraction', then which one of the following equation is correct?

• 9 + 8 - 4 x 2 ÷ 18 = 56

• 9 x 8 + 4 ÷ 2 - 18 = 26

• 9 x 8 ÷ 4 + 2 - 18 = 200

• 9 - 8 x 4 + 2 ÷ 18 = 203