Coding-Decoding

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If 63-30=30, 72-10=40, then 81-60=?
50
no
35
no
15
yes
20
no
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If DOCTOR is written as FQEVQT, how PATIENT can be written in that code?
RVKGPV
no
RCKPGVV
no
RCVKGPV
yes
RVCKGVP
no
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In a certain language, if the word PARTNER is coded as OZQSMDQ, then what is the code for the word SEGMENT?
TFHNFOU
no
RDFLDMS
yes
RDELDMS
no
RDFEDNS
no
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In a certain code language, GRAPE is written as 27354 and FOUR is written as 1687. How is GROUP written in that code?

27384
no
27684
no
27685
yes
27658
no
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If 55 + 66 = 33 and 22 + 99 = 33, what is 44 + 88 =?
33
yes
36
no
38
no
40
no
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If in a certain code DICKINSON is written as 357950210, and DIPP is written as 3566, then how can PICNIC be written in the same code?
657057
yes
657507
no
560757
no
650757
no
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If TRANSFER is coded as RTNAFSRE, then how ELEPHANT be coded in the same code?
LEPEHATN
no
LEPEAHTN
yes
LEEPAHTN
no
LEPEAHNT
no
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If 64/14=5, 92/31=7, 26/11=6, then 56/22=?
11
no
39
no
7
yes
36
no
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WAYIN is written as TXVFK. How LBUK can be written in that code?
IYRH
yes
KATJ
no
JZSI
no
NDWM
no
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A + B + Y + Z = 54
C + D + W + X = ?
45
no
54
yes
56
no
52
no
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