Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 230 * 1 * 5 * 16 * 41 * 21

 By interchanging the given two signs and numbers which of the following equation will be not correct?
 × and –, 8 and 4
 I. 4 + 3× 8 – 2 ÷ 1 = 3
 II. 8 × 2 – 4 + 6 ÷ 2 = 11

If + means −, − means ×, × means ÷, and ÷ means +, what will be the value of the following expression?
 45 × 9 ÷ 12 – 5 + 3

Select the correct combination of mathematical signs to replace the * signs and to balance the given equation.
 50 * 2 * 3 * 30 * 10 * 40 * 20

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 93 * 65 * 3 * 56 * 14 * 40

What will come in the place of ‘?’ in the following equation, if ‘+’ and ‘× ‘ are interchanged and also ‘5’ and ‘9’ are interchanged?
 3 + 9 – 6 × 5 ÷ 3 = ? 

By Interchanging the given two numbers which of the following equation will be not correct?
 3 and 4

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
20 * 2 * 50 * 5 * 115