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 Coding and Decoding Questions

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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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Q:

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

 

16 ÷ 4 x 8 - 10 + 14 = 12

 

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

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Q:

If 7Ω6 = 84, 8Ω7 = 112 and 8Ω4 = 64, then find the value of 3Ω4 = ?

 

 

A) 24   B) 12
C) 4   D) 20
 
Answer & Explanation Answer: A) 24  

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2 19790
Q:

If signs - and x, and numbers 3 and 15 are interchanged, what is the value of 3+12/6-4x15 is

 

A) 20 B) 30
C) 40 D) 50
 
Answer & Explanation Answer: A) 20

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Q:

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

 

14 + 18 x 40 - 10 ÷ 20 = 66

 

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

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1 19623
Q:

If S means '+', L means 'x', U means '/' and K means '-', then the value of

 

21 S 1 U 7 L 15 U 6 L 14 K 55

 

A) -50 B) 26
C) -29 D) 29
 
Answer & Explanation Answer: C) -29

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0 19621
Q:

If in a certain language if ENTRY is coded as 12345 and STEADY is coded as 931785, then state which is the correct code for below word. NEATNESS

A) 25196577 B) 21732199
C) 21362199 D) 21823698
 
Answer & Explanation Answer: B) 21732199

Explanation:

The alphabets are soded as shown :

 

E N T R Y S A D1 2  3 4  5  9 7  8

 

N is coded as 2,

 

E as 1,
A as 7,
T as 3   and
S as 9.
So, NEATNESS is coded as 21732199.

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Q:

If 40@8 = 50, 30@3 = 100 and 10@2 = 50, then find the value of 20@5 = ?

 

A) 70 B) 50
C) 40 D) 90
 
Answer & Explanation Answer: C) 40

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