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Question 1
The mean of 19 observations is 24. If the mean of the first 10 observations is 17 and that of the last 10 observations is 24, find the 10th observation.
Question 2
The mean of 20 items is 55. If two items 45 and 30 are removed, the new mean of the remaining items is
Question 3
The average age of a cricket team of 11 players is the same as it was 3 years back because 3 of the players whose current average age of 33 years were replaced by 3 youngsters. The average age of the newcomers is
Question 4
The average age of four boys A, B, C and D is 5 years and the average age of A, B, D, E is 6 years and C is 8 years old. The age of E is (in years)
Question 5
The average age of a jury of 5 is 40. If a member aged 35 resigns and a managed 25 becomes a member, then the average age of the new jury is
Question 6
The average marks obtained by 40 students of a class are 86. If the 5 highest marks are removed then the average reduces by one mark. The average marks of the top 5 students is how much?
Question 7
A student finds the average of ten 2-digit numbers. If the digits of one of the numbers are interchanged the average increases by 3.6.The difference between the digits of that 2-digit number is
Question 8
The average of two numbers is 62. If 2 is added to the smallest number, the ratio between the numbers becomes 1:2. The difference of the numbers is
Question 9
A cricketer scored 180 runs in the first test and 258 runs in the second. How many runs should he score in the third test so that his average score in the three tests would be 230 runs?
Question 10
The average weight of 8 persons is increased by 2.5 kg when one of them whose weight is 56 kg is replaced by a new man. The weight of the new man is:
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Aug 1MPPSC
