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could u plz explain the below ques. clearly... i found te answer in cat paper but it was not clear....
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TCS Other Question
. If the sum to infinity of the series 2 + (2 - d)2/3 + (2 + d) 4/9 + (2+ 3d) 8/27 + D.. is 5/2, what is the value of d?
(1) 7/12 (2) -7/12 (3) -5/12 (4) 5/12
In box of balls, 2/3rd are blue and the remaining is pink. If 5/9 th of blue and 7/8 th of pink are defective, find the probability of picking up a defective ball, if there is a total of 146 balls in the box.