Coding and Decoding Questions

Q:

Select the correct combination of mathematical signs to replace * signs and to balance the equation.

48 * 4 * 6 * 3 * 30

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

Explanation:
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Q:

If "A" means "subtraction", "B" means "division", "C" means "addition" and "D" means "multiplication", then

 

294 B 7 A 40 C 33 D 11 = ?

 

A) 369 B) 365
C) 368 D) 363
 
Answer & Explanation Answer: B) 365

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Q:

In a certain code language , 'PROBLEM' is written as MPERLOB. How will 'PROBLEM' is written as MPERLOB. How will 'NUMBERS' be written in that code?

A) SNUREMB B) SNRUBME
C) SNRUEMB D) SNRUMEB
 
Answer & Explanation Answer: C) SNRUEMB

Explanation:

 123456PROBLE7M716253MPERLO4B

Similarly, 123456NUMBER7S716253SNRUEM4B

 

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Q:

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "­" means "multiplied by", then

96 x 12 – 4 + 13 ÷ 21 = ?

 

A) 42 B) 40
C) 37 D) 333
 
Answer & Explanation Answer: B) 40

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Q:

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

 

90 ÷ 10 + 5 - 6 x 4 = 28

 

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

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Q:

If x means -, / stands for +, + stands for /, and - stands for x, which of the following gives 125 - 50 / 10 + 20 x 4 ?

 

A) 360 B) 315
C) 6246.5 D) 420
 
Answer & Explanation Answer: D) 420

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Q:

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

 

16 x 4 - 10 + 10 ÷ 6 = 54

 

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

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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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