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 Coding and Decoding Questions

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Q:

Replace # sign with the mathematical operators '+', '/','-'or'=' to get a balanced equation out of 186 # 31 # 36 # 30.

 

A) + / = B) - = +
C) - + / D) / = -
 
Answer & Explanation Answer: D) / = -

Explanation:
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Q:

If UPTO is coded as PTUO, how is CANT coded?

 

A) NCTA B) ANCT
C) ANTC D) NTCA
 
Answer & Explanation Answer: B) ANCT

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3 60249
Q:

In a certain code language, 'it is dark outside' is written as 'ha no ti ju','is it still raining' is written as 'pa ha da no', 'go and play outside' is written as 'su ju ye la'. How is 'dark' written in that code language?

A) ha B) ti
C) su D) ye
 
Answer & Explanation Answer: B) ti

Explanation:
The code for outside is -ju. The code for it/is -ha/no. Hence, the code for dark is 'ti'
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Q:

If 18$6 = 6, 8$2 = 3 and 8$4 = 2, then find the value of 18$12 = ?

 

A) 3 B) -8
C) 4 D) 6
 
Answer & Explanation Answer: A) 3

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2 59499
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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705 59182
Q:

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

16 x 8 - 4 ÷ 9 + 14 = 37

 

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

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2 58680
Q:

If 70!10 = -7, 70!5 = -14 and 40!4 = -10, then find the value of 20!2 = ?

 

A) 30 B) -10
C) 12 D) -24
 
Answer & Explanation Answer: B) -10

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2 56759
Q:

Interchanging which two signs will make the following equation correct?

 

42 / 4 + 2 - 3 x 5 = 29

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

Explanation:
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