Reasoning
ISBT Reasoning for all banking PO,Clerk,IBPS PO,Railway,SSC,IAS,OAS Exams
Q81.  Four of the following five are alike and form a group. Which of the following is not fit for them ? 
1)  Nitrogen  2)  Oxygen 
3)  Hydrogen  4)  Phosphorus 
5)  Carbondioxide 
Answer : Phosphorus
Explanation : All others are gases except Phosphorus.
Explanation : All others are gases except Phosphorus.
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Q82. 

1)  CZEB  2)  CDEF 
3)  YZAB  4)  CDAB 
5)  YZEF 
Answer : CZEB
Explanation :
Explanation :
The first and the third letters of the first groups are each moved two steps forward to obtain the first and the third letters of the second group. The second and the fourth letters are moved two steps backward.
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Q83. 

1)  IBQM  2)  FINR 
3)  JBRL  4)  JCRL 
5)  IRLQ 
Answer : JCRL
Explanation :
Explanation :
The first and the third letters of the first group are moved five steps forward and the second and the fourth letters are moved five steps backward to obtain the corresponding letters of the second group. The third and the fourth groups will also be related in the same way.
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Q84. 

1)  RCRT  2)  QRTC 
3)  QTRC  4)  RQTC 
5)  RTCR 
Answer : RTCR
Explanation :
Explanation :
The first and the third letters of the first group are each moved two steps forward to obtain the corresponding letters of the second group. The second and the fourth letters of the first group are each moved one step forward to obtain the corresponding letters of the second group.
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Q85. 

1)  RTNP  2)  NPRT 
3)  NRPT  4)  NTRP 
5)  RPNT 
Answer : RPNT
Explanation :
Explanation :
Each letter of the first group is moved eight steps forward to obtain the corresponding letters of the second group. A similar relationship will exist between the third and the fourth group.
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Q86. 

1)  QNKA  2)  POLB 
3)  PMJA  4)  QNKB 
5)  PMSI 
Answer : QNKA
Explanation :
Explanation :
The first and the second letters of the first group are moved five steps forward to obtain the corresponding letters of the second group. The third and the fourth letters are moved four steps backward. A similar relationship will exist between the third and the fourth groups.
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Q87. 

1)  QBRN  2)  MQXB 
3)  ROMB  4)  YLQB 
5)  VWYA 
Answer : YLQB
Explanation :
Explanation :
The first and the second letters of the first group are each moved two steps forward to obtain the first and the second letters of the second group respectively. The third and the fourth letters of the first group each are moved one step forward to obtain the third and the fourth letters of the second group respectively.
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Q88. 

1)  LIOR  2)  LIRO 
3)  ILRO  4)  ILOR 
5)  IOLR 
Answer : ILOR
Explanation :
Explanation :
The first, second, third and fourth letters of the first group are moved one, two, three and four steps forward respectively to obtain the corresponding letters of the second group. A similar relationship will exist between the third and the fourth groups.
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Q89. 

1)  VUW  2)  WVU 
3)  WUV  4)  UVW 
5)  UWV 
Answer : WVU
Explanation : PON is the reverse of NOP. Similarly, the reverse of UVW is WVU
Explanation : PON is the reverse of NOP. Similarly, the reverse of UVW is WVU
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Q90. 

1)  AYW  2)  WYA 
3)  YWA  4)  VXA 
5)  VXZ 
Answer : VXA
Explanation :
Explanation :
EGI forms a sequence of alternate letters, while in JLO, the first two letters are consecutive and there is a gap of two letters between second and third letters.
Similarly PRT forms a sequence of alternate letters. The group having properties similar to JLO is VXA.
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