Verbal Reasoning - Mental Ability Questions

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

42, 21, 21, ?, 63, 157.5

Select the related word/letters/number from the given alternatives.

4 : 44 : : ? : 77

Select the related word/letters/numbers from the given alternatives:

13 : 20 : : 17 : ?

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

16 ÷ 4 - 50 x 4 + 18 = 26

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

5 - 12 + 15 ÷ 50 x 25 = 23

Which of the following terms follows the trend of the given list?

XxXXXXX, XXxXXXX, XXXxXXX, XXXXxXX, XXXXXxX, _______________.

Select the correct option will complete the given number series.

13, 10, 7, 4, ___

Select the related word/letters/number from the given alternatives.

97 : 2 : : 84 : ?