Choose the correct sequence of mathematical symbols to balance the following equation and replace the * signs.
24 * 2 * 4 *8 

What will come in the place of ‘?’ in the following equation, if ‘×’ and ‘ – ‘ are interchanged and also ‘+’ and ‘÷’ are interchanged?
 27 × 8 − 3 ÷ 4 + 2 = ? 

Which two signs have to be interchanged to correct the given equation?
52 + 64 – 16 ÷ 36 × 6=20

The ratio of the present age of the two brothers is 1: 2. And 5 years ago this ratio was 1: 3. So what will be the ratio of their age after 5 years.

If Q means ‘add to’, J means ‘multiply by’, T means ‘subtract from’ and K means ‘divide by’, then 26 K 2 Q 3 J 6 T 4 = ?   

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

If 12 × 16 = 188 and 14 × 18 = 248, then find the value of 16 × 20 = ?

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 78 * 43 * 2 * 56 * 27 * 4