Ques:- There are 4 people in a closed room and you are waiting outside to enter into the room. You can enter only when one of them opens the door. The probability that somebody will open the door is 1/2. Now what is the probability that the door will be opened so that you can go inside?
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Ques:- Find out the wrong number in the series:
15, 16, 34, 105, 424, 2124, 12576
15, 16, 34, 105, 424, 2124, 12576
A. 34
B. 105
C. 424
D. 2124
Recent Answer : :
The series is 15, 16, 34, 105, 424, 2124, 12576
1) (15*1) + 1 = 16
2) (16*1) + 2 = 34
3) (34*3) + 3 = 105
4) (105*4) + 4 = 424
5) (424*5) + 5 = 2125
Clearly, they gave 2124 instead of 2125, so it is the wrong number in the series.
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A. 2 and 11
B. 3 and 7
C. 5 and 7
D. 11 and 13
Recent Answer : :
D
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Recent Answer : :
16
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Recent Answer : :
group wise work is use full and effectively
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Recent Answer : :
I belive it is 3:45 hrmins
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Recent Answer : :
Answer: Pile II
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The probability that no one opens the door would be
0.5×0.5×0.5×0.5= 0.0625
So, the probability that atleast one opens the door is 1-0.0625= 0.9375