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 Coding and Decoding Questions

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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:

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

 

305 B 5 A 28 C 43 D 12 = ?

A) 569 B) 549
C) 560 D) 530
 
Answer & Explanation Answer: B) 549

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Q:

If FRIEND is coded as HUMJTK, how is CANDLE written in that code ?

A) EDRIRL B) DCQHQK
C) ESJFME D) DEQJQM
 
Answer & Explanation Answer: A) EDRIRL

Explanation:

The first, second, third, fourth, fifth and sixth letters of th word are respectively moved two, three, four, five, six and seven steps forward to obtain the corresponding letters of the code.

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Q:

If + means x, - means /, x means + and / means -; compute the value of the expression

 

36 - 4 + 7 x 8

 

A) 72 B) 71
C) 74 D) 75
 
Answer & Explanation Answer: B) 71

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Q:

If 20#4 = -5, 50#25 = -2 and 80#16 = -5, then find the value of 10#2 = ?

 

A) -30 B) -40
C) -20 D) -5
 
Answer & Explanation Answer: D) -5

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Q:

If 12@18 = -3, 18@6 = 6 and 16@8 = 4, then find the value of 6@10 = ?

 

A) -10 B) 8
C)  4 D)
 
Answer & Explanation Answer: D)

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Q:

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

 

18 ÷ 2 - 25 x 9 + 6 = 38

 

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

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Q:

If 20 - 10 means 200, 8 / 4 means 12, 6x2 means 4, then

 

100 - 10 x 1000/ 1000 + 100 x 10 = ?

 

A) 20 B) 10
C) 0 D) 1
 
Answer & Explanation Answer: C) 0

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