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Logical Reasoning

Questions and answers on Mathematical reasoning

Mathematical reasoning

1.

If × = ‘addition’ ,÷ = ‘subtraction’ , + = ‘multiplication’ and - = ‘division’, then 11× 6÷ 4– 7+5 = ?

A.

21.8

B.

14.15

C.

12.5

D.

78.0

2. If we replace – with × , × with + , + with ÷ and ÷ with – , then find the value of 80 × 15 + 5 – 9 ÷ 3?
A.

109

B.

108

C.

104

D.

101

3.

If + changes to ÷ , × changes to - , ÷ changes to × and - changes to + , then find the value of
9 + 7 × 3 ÷ 5 – 2?

A.

-15.71

B.

-15.5

C.

-13

D.

15.71

4.

 If × = ÷ , - = × , ÷ = + and + = – , then find the value of (3 –15 ÷19) × 8 + 6 = ?

A.

1

B.

2

C.

3

D.

4

5.  If + replaces × , ÷ replaces - , × replaces ÷ and - replaces + , what will be the value of 5 + 13 ÷ 3 – 36?
A.

19

B.

92

C.

98

D.

103

6.  If + replaces - , - replaces × , × replaces ÷ and ÷ replaces + , then find the 15 × 3 ÷ 15 + 5 –2 ?
A.

19

B.

12

C.

18

D.

10

7.

 If ÷ replaces + , - replaces ÷ , × replaces - and + replaces × , then ((26 × 4)- 6 × 4) / (4 + 8 × 2 + 16 ÷ 1) = ?

A.

-0.333

B.

-0.888

C.

-0.111

D.

-0.777

8.

 If P means ÷ , Q means × , R means + and S means - , then find the value of 14 Q 16 P 4 R 5 S 6 ?

A.

23

B.

54

C.

78

D.

55

9.

 If a stands for ‘add’ ,  b stands for ‘subtract’ ,  c stands for ‘divide’ and  d stands for  ‘multiply’ , then calculate the value of (8 d 3) b 6 a 5 ?

A.

23

B.

14

C.

13

D.

55

10.

If L means × , M means ÷ , P means + and Q means - , then what is the value of  14 P 24 M 8 Q 6 M 2 L 2?

A.

23

B.

14

C.

13

D.

55

11.

 If × means  ‘addition’ , - means  ‘division’ , ÷ means  ‘subtraction’  and + means  ‘multiplication’ , then which of the following equations is correct?

A.

18 × 5 ÷ 10 + 4 - 3  =  19

B.

18 + 5 ÷ 10 × 4 - 3  =  9

C.

18 + 5 - 10  × 4 ÷ 3  =  10

D.

18 - 5 × 10 ÷ 4 + 3  =  12

12.

If + means ‘division’ , × means ‘addition’ , - means ‘multiplication’  and ÷ means ‘subtraction’ , then which of the following equations is correct?

A.

21 × 6 + 7 ÷ 2 - 6  =  20

B.

21 ÷ 6 + 3 × 5 - 4 =  45

C.

21 + 6 - 3 × 5 ÷ 5 =  24

D.

21 - 6 + 3 × 5 ÷ 6 =  41

13.

If interchanges are: Signs + and - and numbers 4 and 8.
Which of the given options is correct?

A.

4 ÷ 8 - 12 = 16

B.

4 - 8 + 12 = 0

C.

8 ÷ 4 - 12 = 24

D.

8 - 4 ÷ 12 = 8

14.

If  interchanges are -> Signs  -  and  ÷  and numbers 3 and 7.
Which of the following options is correct?

A.

6 - 7 ÷ 3 = -1

B.

7 - 6 ÷ 3 = 5

C.

3 ÷ 7 - 2 = 6

D.

3 - 7 ÷ 6 = 2

15.

 To get 4 × 3 + 6 - 12 ÷ 3 = 18 which of the following options is correct?

A.

× and +

B.

+ and -

C.

+ and ÷

D.

- and ÷

16.

To get 14 ÷ 2 - 6 ×  2 + 8  = 11, Which of the following options is correct?

A.

÷ and +

B.

- and +

C.

× and +

D.

÷ and ×

17.

To make the given equation right , what options has to be changed
Equation = (3 ÷ 4) + 2  =  2

A.

+ and ÷  , 2 and 3

B.

+ and ÷  , 2 and 4

C.

+ and ÷  , 3 and 4

D.

None

18.  6 × 6 –2 = 10
A.

× to ÷  , 2 and 4

B.

- to ÷  , 2 and 6

C.

- to + , 2 and 6

D.

None

19.  (18 ÷ 2) × 3 = 4
A.

× and ÷  , 2 and 3

B.

- to ÷  , 2 and 6

C.

- to + , 2 and 6

D.

× to - , 2 and 3

20.  If we inter + and × find the value of 8 × 4 + 2 - 8 ?
A.

4

B.

1

C.

8

D.

10