Verbal Reasoning - Mental Ability Questions

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

12, 17, 34, ?, 78, 83, 166

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

15 x 2 + 10 - 8 ÷ 20 = 15

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

16 x 4 - 10 + 10 ÷ 6 = 54

If "$" means "added to", "@" means "divided by", "#" means "multiplied by" and "%" means "subtracted from", then

136 @ 17 # 0 $ 19 % 5 = ?

Select the correct set of symbols which will fit in the given equation?

5  0  3  5 = 20

In the following question, select the related letter/letters from the given alternatives.

PTR : NRP : : WTV : ?

In the following question, select the related letter/letters from the given alternatives.

KMN : OQR : : SUV : ?

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

13 - 14 ÷ 30 x 7 + 15 = 13