Question
There are 14 boys and 6 girls giving interview for a
job. If three of them are selected, then what is the probability that one of the three is a girl and the other two are the boys?Solution
Total Number of candidates = 20 Let ‘S’ be the Sample Space Then, n(S) = number of ways of three candidates who got selected n(S) = 20C3 = 1140 Let ‘E’ be the event of 1 girl and 2 boys selected Therefore, n(E) = number of possibility of 1 girl out of 6 and 2 boys out of 14 n(E) = 6C1 × 14C2 = 546 Now the required Probability = (n(E))/(n(S)) = 546/1140 = 91/190
Which of the following element is indirectly related with drought resistance?
A situation when the rainfall deficiency is 25% or more of long term average, it is classified as
The Culturable Command Area (CCA) for a minor irrigation project is …………
A day is considered as rainy day when ………………………rains during 24 hours.
Main mechanism by which gaseous exchange occur between soil and atmosphere is
Which of the following crop is used for flax and oil both?
Which of the following type of monsoon is also known as retreating monsoon?
The instrument used in meteorogical observatory used to measure the rainfall
National Initiative on Climate Resilient Agriculture (NICRA) started in which year?
The excess of which of the following gases causes acid rain in the environment?
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