Question
In a cricket world cup the probability that India will
win the cup is ¼. The Probability of Pakistan winning the cup is 1/5 and Australia winning the cup is 1/6.What is the probability that either of these 3 teams India, Pakistan and Australia would win the world cup?Solution
Note -Only one team can win the cup. So now- Probability = ¼+1/5+1/6 = (15+12+10)/60 =37/60
There are three numbers 'a', 'b' and 'c' such that average of 'a' and 'b' is 14, average of 'b' and 'c' is 16 and average of 'a' and 'c' is 30. Find the...
The batting average for 27 innings of a cricket player is 48 runs. His highest score in an innings exceeds his lowest score by 157 runs. If these two in...
- The mean of 15 observations is 124 and the median of the observations is 130. Find the mode of the observations.
The average age of a group of 15 students is 32 years. Two persons of age 48 years and 32 years, left the group and 2 persons of age 54 years and 101 ye...
- What is the average of the squares of the first 23 natural numbers?
Average weight of each student, in a class of 70 students, is 86kg. If the ratio of number of boys and girls in the class is 4:3, respectively and avera...
A worker completes 6 tasks at an average rate of 5 tasks per day. If he needs to complete an average of 8 tasks per day over 12 days, what should be his...
In an examination, the average marks obtained by the students is 40. After correcting the quantitative mistakes, the average of 60 students is reduced ...
The average height of each person in group 'G' having 28 people is 12 cm less than the average height of each person in group 'H' having 24 people. If t...
A number is such that when it is multiplied by 6, it gives another number which is as much above from 210 as the original number (itself) is below 210. ...
Relevant for Exams:
