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Mathematical Operation

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11 If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 81 x 9 + 10 – 6 ÷ 5 = ?

A
46
B
-46
C
47
D
-45

12 If Q means 'add to', J means 'multiply by', T means 'substract from' and K means 'divide by' then 30 K 2 Q 3 J 6 T 5 = ? 

A
18
B
28
C
31
D
103

13 If "K" denotes "multiplied by", "M" denotes "subtracted from", "J" denotes "added to" and "L" denotes "divided by", then
44 M 24 K 56 L 14 J 60 = ?

A
16
B
72
C
8
D
40

14 In a certain code language, '÷' represents '+', '-' represents 'x', '+' represents '÷' and 'x' represents '-'. Find out the answer to the followingquestion. 8 ÷ 14 - 20 + 5 x 2 = ?

A
46
B
62
C
32
D
14

15 If × stands for 'addition', ÷ stands for 'subtraction', + stands for 'multiplication' and-stands for 'division', then 20 × 8 ÷ 8 - 4 + 2 = ?

A
80
B
25
C
24
D
5

16 If "+" denotes "divided by", "x" denotes "added to", "÷" denotes "subtracted from" and "–" denotes "multiplied by", then
54 + 162 – 18 x 12 ÷ 6 = ?

A
4
B
16
C
12
D
10

17 Given interchanges :  Signs + and - , numbers 4 and 8.

A
4 + 8 - 12 = 12
B
4 - 8 + 12 = 0
C
8 + 4 - 12 = 24
D
8 - 4 + 12 = 8

18 In the following question, correct the equation by interchanging the two signs.
6 ÷ 17 x 51 + 6 – 12 = – 4

A
x and ÷
B
+ and ÷
C
+ and –
D
– and ÷

19 In the following question, correct the given equation by interchanging two numbers.
8 x 3 ÷ 4 + 9 – 5 = 16

A
3 and 4
B
4 and 8
C
5 and 3
D
5 and 9

20 In the following question, correct the given equation by interchanging two numbers.
8 x 3 ÷ 4 + 9 – 5 = 16

A
3 and 4
B
4 and 8
C
5 and 3
D
5 and 9