If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then
38 x2 – 6 + 19 ÷ 35 = ?

If + means −, − means ×, × means ÷, and ÷ means +, what will be the value of the following expression?
 5 ÷ 5 + 5 – 10 × 10 = ?

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

2 × 4 × 6 = 4; 9 × 3 × 7 = 13; 4 × 7 × 6 = 3; 9 × 7 × 8 =?

Which of the following interchanges in signs and numbers will make the given equation correct?

8 x 9 + 2 = 74

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 25 * 5 * 10 * 2 * 8 * 11

Which of the following symbols should be placed in the blank space in order to complete the given expression in such a manner that ‘X > I’ definitely true?
  A = R ≥ I ? T = N ≤ M = X

Which of the following interchange of numbers and signs would make the given equation correct?
 10 − 4 ÷ 20 + 16 × 8 = 16

Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
11 * 7 * 345 * 5 * 31 = 115