If '+' means '-', ' X ' means '+', '-' means '÷' and '÷' means ' X ', then what is the value of the following expression?

Which two signs should be interchanged to make the following equation correct?

52 – 27 ÷ 9 + 7 × 5 = 20

Which of the following “signs” are placed in place of “symbols” given in the equation to make the equation true?

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.

364 * 4 * 7 * 4 * 12 = 75

If,

40 – 14 means 560,

168 + 8 means 21,

26 ÷ 2 means 28,

8 x 7 means 1,

then 410 – 7 x 290 ÷ 350 + 7 x 21 = ?

Which two signs should be interchanged to make the following equation correct?

5 × 8 ÷ 2 – 4 = 30 + 6

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.

56 * 492 * 6 * 7 * 123 = 507

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

4 7 6

15 ? 21

44 68 60