Verbal Reasoning - Mental Ability Questions

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

17 x 6 + 2 - 9 ÷ 2 = 44

Select the number missing from the given series.

3, 12, ___, 21612

X introduces Y saying, "He is the husband of the granddaughter of the father of my father ". How is Y related to X?

In the following question, select the missing number from the given series.

19, 26, 40, 61, ?, 124

If 7*7 = 140, 6*1 = 70 and 3*5 = 80, then find the value of 4*4 = ?

If 3!5 = 30, 6!1 = 12 and 5!8 = 80, then find the value of 2!2 = ?

If the mathematical operator, '+' means 'x', '/' means '-', '-' means '+', and 'x' means '/', then the value of 11 +14 x7- 5 / 29 is