Question
A speaks the truth 5 out of 7 times and B speaks truth 5
out of 9 times. What is the probability that they contradict each other in stating the same fact?Solution
P (A truth) = Probability that A speaks the truth =5/7 P (A lie) = Probability that A lies = 1 - P (A truth) =1-5/7 =2/7 P (B Truth) = Probability that B speaks the truth = 5/9 P (B lie) = Probability that B lies = 1- P (B truth) = 1-5/9 =4/9. 
22 15 10 20 33 93.5
...6, 17, 21, 47, ?, 107
The question below is based on the given series I. The series I satisfy a certain pattern, follow the same pattern in series II and answer the question...
171, 173, 183, 213 , ‘?’, 411, 633.
342Â Â Â 252Â Â Â 172Â Â Â 102Â Â Â 42Â Â Â ?
14 20 35 ? 433 2167
...5468, 2734, 1367, 683.5, 341.75, ?
52 25 27 ? 208 1648
...800    544    416    352    ?     304
6Â Â Â Â Â Â Â Â Â Â Â Â Â Â 3Â Â Â Â Â Â Â Â Â Â Â Â Â Â 24Â Â Â Â Â Â Â Â Â Â Â 218Â Â Â Â Â Â Â Â Â 3486Â Â Â Â Â Â Â 43575
10      �...
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