Reasoning Quiz

In questions ( 1 to 4 ) , if given interchanges are made in signs and numbers, which one of the four equations would be correct ?


Q1)-Given interchanges : Signs - and / and numbers 4 and 8.

6 - 8 / 4 = -1

8 - 6 / 4 = 1

4 / 8 - 2 = 6

4 - 8 / 6 = 2

Ans.- C
On interchanging - and / and 4 and 8 in (c) , we get the equation as : 8 - 4 / 2 = 6 , which is true

Q2)-Given interchanges : Signs + and x and numbers 4 and 5.

5 x 4 + 20 = 40

5 x 4 + 20 = 85

5 x 4 + 20 = 104

5 x 4 + 20 = 95

Ans.- C
On interchanging + and x and 4 and 5 in (c) , we get the equation as : 4 + 5 x 20 = 104

Q3)-Given interchanges: Signs + and - and numbers 4 and 8

4 / 8 - 12 =16

4 - 8 + 12 =0

8 / 4 - 12 =24

8 - 4 / 12 =8

Ans.- B
On interchanging + and - and 4 and 8 in (b) we get equation as 8 + 4 - 12 = 0 ; which is true.

Q4)-Given interchanges : signs - and x and numbers 3 and 6.

6 - 3 x 2 =9

3 - 6 x 8 =10

6 x 3 - 4 =15

3 x 6 - 4 =33

Ans.- B
On interchanging - and x and 3 and 6 in (b), we get the equation as : 6 x 3 - 8 =10 , which is true.

Q5)-Which of the following meanings of the arithmetical signs will yield the value 'zero' for the given expression ? 200 x 100 + 300 x 200 - 10 / 2 + 40

+ means - , - means x , x means / , / means +

+ means - , - means / , x means + , / means x

+ means x , - means - , x means / , / means +

+ means / , - means + , x means - , / means x

Ans.- B
Using the operations given in (b) , we get the given expression as 200 + 100 - 300 + 200 / 10 x 2 - 40 = 300 - 300 + 20 x 2 - 40 = 0 + 40 - 40 = 0

Q6)-In the questions ( 6 to 9 ) , Which one of the four interchanges in signs and numbers would make the given equation correct ?
6 x 4 + 2 =16

+ and x , 2 and 4

+ and x , 2 and 6

+ and x , 4 and 6

None of these

Ans.- C
On interchanging + and x and 4 and 6 , we get the equation as : 4 + 6 x 2 = 16 or 4 + 12 = 16 or 16=16

Q7)-( 3 / 4 ) + 2 = 2

+ and / , 2 and 3

+ and / , 2 and 4

+ and / , 3 and 4

No interchange , 3 and 4

Ans.- A
On interchanging + and / and 2 and 3 ,we get the equation as : ( 1 + 4 ) / 3 = 2 , which is true

Q8)-4 x 6 - 2 =14

x to / , 2 and 4

- to / , 2 and 6

- to + , 2 and 6

x to +, 4 and 6

Ans.- C
On changing - to + and interchanging 2 and 6 , we get the equation as : 4 x 2 + 6 =14, which is true

Q9)-( 6 / 2 ) x 3 = 0

/ and x , 2 and 3

x to - , 2 and 6

/ and x , 2 and 6

x to - , 2 and 3

Ans.- D
On changing x to - and interchanging 2 and 3, we get the equation as : (6 /3) -2 =0 , which is true

Q10)-Select the correct set of symbols which will fit in the given equation 5 0 3 5 =20

x, x, x

- , + ,x

x , + , x

+ , - ,x

Ans.- B
Clearly , 5 + 3 x 5 =20 or 5 - 0 + 3 x 5 =20