Verbal Reasoning - Mental Ability Questions

In a certain code, 329 means 'you are bad', 419 means 'bad is good' and 195 means 'nothing is bad'. ___ represents 'good'.

Select the related word/letters/number from the given alternatives.
Nephrology : Kidney : : Ichthyology : ?

A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.

100, -20, 4, ? , 0.16, -0.032

If '÷' stands for subtraction,'-' stands for addition,'x' stands for division and '+' stands for multiplication, then which one of the following equation is correct?

Weight of Sona is four times that of Mona. Weight of Mona is 2.5 times of Hona. Weight of Hona is 1.5 times of Dhona. Weight of Dhona is 2.5 times of Rona. Who is the heaviest?

Select the missing number from the given responses:

If "÷" denotes "multiplied by", "+" denotes "subtracted from", "–" denotes "added to" and "x" denotes "divided by", then which of the following equation is true?

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

80 x 16 ÷ 4 + 2 - 8 = ?