Q3.

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

304 × 19 − 101 + 23 ÷ 5 = ?

Q4.

The same operation(s) are followed in all the given number pairs except one. Find that odd number pair.

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)

Q5.

Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.

Statements:
Some rats are mouse.
No mouse is a rodent.
Some rats are kittens.

Conclusions:
I. No rodent is a kitten.
II. Some rats are rodent.
III. No kitten is a mouse.