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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?

 

20 + 14 ÷ 35 - 10 x 12 = 10

 

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

Explanation:
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Q:

If 18!10 = 4, 10!4 = 3 and 4!8 = -2, then find the value of 16!18 = ?

 

A) 2   B) -1  
C) -8   D)  9
 
Answer & Explanation Answer: B) -1  

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Q:

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

 

17 x 6 + 2 - 9 ÷ 2 = 44

 

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

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Q:

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

18 + 26 - 25 x 10 ÷ 5 = 42

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

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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?

 

7 x 16 + 20 - 20 ÷ 10 = 31

 

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

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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, =

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Q:

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

 

10 ÷ 18 + 25 x 20 - 5 = 92

 

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

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