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 Coding and Decoding Questions

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Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

 

30 ÷ 2 - 10 x 6 + 5 = 35

 

A) + and ÷ B) - and +
C) ÷ and x D) + and x
 
Answer & Explanation Answer: D) + and x

Explanation:
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Q:

In a certain code, TRIPPLE is written as SQHOOKD. How is EXOTIC coded in that code?

 

 

A) DWNHSB B) DNWHSB
C) DWNSHB D) DNWSHB
 
Answer & Explanation Answer: C) DWNSHB

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Q:

If MADRAS can be written as NBESBT, how can BOMBAY be written in that code ?

A) CPNCBX B) CPNCBZ
C) CPOCBZ D) CQOCBZ
 
Answer & Explanation Answer: B) CPNCBZ

Explanation:

Each letter in the word is moved one step forward to obtain the corresponding letter of the code.

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Q:

If 7Ω6 = 84, 8Ω7 = 112 and 8Ω4 = 64, then find the value of 3Ω4 = ?

 

A) 24   B) 12  
C) 4   D) 20
 
Answer & Explanation Answer: A) 24  

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Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

 

12 - 16 x 25 ÷ 80 + 10 = 7

 

A) ÷ and x B) - and +
C) x and - D) ÷ and -
 
Answer & Explanation Answer: B) - and +

Explanation:
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Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

 

24 + 4 - 20 ÷ 9 x 5 = 31

 

A) - and + B) ÷ and x
C) x and - D) + and ÷
 
Answer & Explanation Answer: D) + and ÷

Explanation:
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Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

 

20 + 12 x 35 - 20 ÷ 10 = 31

 

A) ÷ and - B) + and x
C) + and ÷ D) - and +
 
Answer & Explanation Answer: A) ÷ and -

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Q:

If 7*7 = 140, 6*1 = 70 and 3*5 = 80, then find the value of 4*4 = ?

 

A) 60 B) 80
C) 10 D) 40
 
Answer & Explanation Answer: B) 80

Explanation:
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