Chapter-10⇒Mathematical Operations

1. If ‘+’ means ‘×’, ‘÷’ means ‘-‘, ‘-‘ means ‘÷’ and ‘×’ means ‘+’, then find the value of 2 + 2² – 2 × 2² ÷ 2

 
 
 
 

2. If + stands for ‘division’, × stands for ‘addition’, – stands for ‘multiplication’ and ÷ stands for ‘subtraction’, then which of the following equations is correct?

 
 
 
 

3. If + means -, – means ×, × means ÷ and ÷ means +, then 15 × 3 ÷ 15 + 5 – 2 = ?

 
 
 
 

4. If ‘0’ stands for ‘multiply and halve’ and ‘*’ stands for ‘add and double the sum’, then the value of (3 * 1) * (3 ‘0’ 4) is

 
 
 
 

5. If – means ×, × means +, + means ÷ and ÷ means -, then 40 × 12 +3 – 6 ÷ 60 = ?

 
 
 
 

6. In the following equation, two signs need to be interchanged to make it correct. Choose the signs from he given alternatives.
36 ÷ 2 + 36 ÷ 6 – 2 × 1 = 14

 
 
 
 

7. If ‘+’ means ‘×’, ‘÷’ means ‘-‘, ‘×’ means ‘÷’ and ‘-‘ means ‘+’, then the value of 16 + 32 – 48 × 64 ÷ 480 is

 
 
 
 

8. If * = +, # = -, @ = =; $ = ×; & = ÷, then which of the following options is true?

 
 
 
 

9. If – means ÷, + means ×, ÷ means -, × means +, then which of the following equations is correct?

 
 
 
 

10. If ‘+’ means ‘×’, ‘÷’ means ‘-‘, ‘-‘ means ‘÷’ and ‘×’ means ‘+’, then find the value of 123 – 41 + 4 × 13 ÷ 5

 
 
 
 

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