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 Coding and Decoding Questions

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Q:

After interchanging + & x and 12 &18, which of the following equations will hold true?

A) (9 + 12) x 18 = 60 B) (18 + 6) x 12 = 90
C) (12 + 18) x 12 = 72 D) (12 + 6) x 18 = 36
 
Answer & Explanation Answer: B) (18 + 6) x 12 = 90

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Q:

If 8%5 = 30, 9%2 = 70 and 1%4 = -30, then find the value of 2%5 = ?

A) -30 B) 10
C) -20 D) 40
 
Answer & Explanation Answer: A) -30

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Q:

If EFMIJ means DELHI, then the last letter of the word got by decoding IQBOS is

A) R B) T
C) K D) M
 
Answer & Explanation Answer: A) R

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Q:

In a certain code language, 'x' represents '+', '÷' represents 'x', '­' represents '÷' and '+' represents '­'. Find out the answer to the following question.

5 ÷ 4 ­ 10 + 7 x 16 = ?

A) 50 B) 5
C) 9 D) 11
 
Answer & Explanation Answer: D) 11

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Q:

If 4Δ2 = 60, 7Δ9 = 160 and 8Δ3 = 110, then find the value of 3Δ2 = ?

A) 50 B) 90
C) 70 D) 60
 
Answer & Explanation Answer: A) 50

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Q:

In a certain code language, if COTTON is coded as 325526 and WOOLEN is coded as 122976, then TOWEL will be coded as?

A) 12579 B) 21795
C) 52179 D) 79125
 
Answer & Explanation Answer: C) 52179

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Q:

In this question, some equations are solved on the basis of a certain system. On the same basis find out the correct answer from amongst the four alternatives for the unsolved equation.

53 ­ 34 = 5334
65 ­ 46 = 6456
75 ­ 24 = ?

A) 7542 B) 7524
C) 7452 D) 7254
 
Answer & Explanation Answer: D) 7254

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Q:

In a certain code language, '-' represents 'x', '÷' represents '+', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.
 
12 - 6 + 4 x 10 ÷ 16 = ?

A) 14 B) 2
C) 24 D) 5
 
Answer & Explanation Answer: C) 24

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