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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?

 

15 x 2 + 10 - 8 ÷ 20 = 15

 

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

Explanation:
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Q:

If 7*7 = 140, 6*1 = 70 and 3*5 = 80, then find the value of 4*4 = ?

 

A) 60 B) 80
C) 10 D) 40
 
Answer & Explanation Answer: B) 80

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6 20864
Q:

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

 

15 x 4 + 10 - 10 ÷ 14 = 10

 

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

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0 20642
Q:

In a certain code language ‘ROUTINE’ is written as 'VMRGFLI'. How will 'CRUELTY' be written in that code language ?

A) UPVCZLR B) VPCVZRL
C) CVCPZRL D) VCPCZLR
 
Answer & Explanation Answer: B) VPCVZRL

Explanation:

ROUTINE IS 7 LETTER WORD.. (1st=R,2nd=O,3rd=U,4th=T,5th=I,6th=N,7th=E)
1st and 3rd letter interchanging. (UORTINE)
5th and 7th letter interchanging. (UORTENI)
1st letter shifting one after that (VORTENI)
2nd letter shifting two befor that (VMRTENI)
3rd letter remains same (VMRTENI)
4th letter
(total alphabets - current)+1
(26 - 20)+1= 7.(i.e) G (VMRGFNI)
5th letter shifting one after that (VMRGFNI)
6th letter shifting two befor that (VMRGFLI)
7th letter remains same (VMRGFLI
Like that,
CRUELTY IS 7 LETTER WORD.. (1st=C,2nd=R,3rd=U,4th=E,5th=L,6th=T,7th=Y)
1st and 3rd letter interchanging. (URCELTY)
5th and 7th letter interchanging. (URCEYTL)
1st letter shifting one after that (VRCEYTL)
2nd letter shifting two befor that (VPCEYTL)
3rd letter remains same (VPCEYTL)
4th letter
(total alphabets - current)+1
(26 - 5)+1= 22.(i.e) V (VPCVYTL)
5th letter shifting one after that (VPCVZTL)
6th letter shifting two befor that (VPCVZRL)
7th letter remains same (VPCVZRL).

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115 20555
Q:

If 9&4 = 50, 3&7 = -40 and 7&5 = 20, then find the value of 4&5 = ?

 

 

A) 80   B) -10  
C) 20   D)  -80
 
Answer & Explanation Answer: B) -10  

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Q:

If 19!3 = 32, 13!4 = 18 and 12!2 = 20, then find the value of 17!3 = ?

 

A) 16 B) 28
C) 4 D) 8
 
Answer & Explanation Answer: B) 28

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4 20462
Q:

If 'W' means 'x', 'X' means '-', 'Y' means '+' and 'Z' means '/', then 28 Z 7 W 8 X 6 Y 4 = ?

 

A) 30 B) 3/2
C) 32 D) 34
 
Answer & Explanation Answer: A) 30

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Q:

If 3!5 = 30, 6!1 = 12 and 5!8 = 80, then find the value of 2!2 = ?

 

A) 28 B) 12
C) 8 D) 32
 
Answer & Explanation Answer: C) 8

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