Q3.

Three of the following four options are alike in a certain way and thus form a group. 
Which is the one that does NOT belong to that group? 
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

Q4.

What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘-’ are interchanged and ‘ב and ‘÷’ are interchanged?

342 × 18 + 79 – 45 ÷ 3 = ?

Q5.

Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number result(s) in the second number. Similarly, certain mathematical operation(s) on the second number result(s) in the third number and so on. Which of the given options follows the same set of operations as in the given sets? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
18 – 36 – 72 – 107
15 – 30 – 60– 95