TCS Company Numerical Ability Permutation and Combination

find the 36 th word if the word SENIOR is arranged in dictionary order.....

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TCS Other Question

a farmer has a rose garden. everyday he either plucks 7 or 6 or 24 or 23 roses. now, when farmer plucks these no. of roses , the next day 37 or 36 or 9 or 18 new roses bloom. on monday he counts 189 roses.he plucks the roses as per his plan for consecutive days and new roses bloom next day as said earlier. after some of the days which of the following can be the no. of roses in the garden? plz xplain it with clearly. its difficult to understand this ques.
a) 4
b) 37
c) 7
d) 30
Hey there !
guys I have my tcs aptitude test tommorow morning and I would realy appriciate if you can send me all important questions and links.
Thanks in advance !

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Charul