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25070 In each of these questions, a number series is given. In each series, only one number is wrong. Find out the wrong number.Solution
The average weight of 20 students in a class is 52 kg. Two students leave the class, and their combined average weight is 40 kg. Subsequently, six new s...
In a school of 50 students, the average score in a French exam is 72 marks, but when one student transferred out and 4 new students joined the school, t...
The average runs of a bowler increased by 4 runs when he took 144 wickets in his 40th match. Find the average wickets taken by the bowler after 40 matches.
- Salaries of M, N and O are in the proportion 4:6:5. Their average salary is Rs. 18,000. If M spends 50% of salary, N spends 60%, and O spends 70%, find the...
The average weight of a group of five persons, A, B, C, D, and E is 60 kg. If another person K joins the group then the average weight of the group is d...
The average temperature for a week is recorded as 35.4°C. The difference between the highest and lowest temperatures during the week is 30°C. Addition...
A cricketer whose bowling average is 24.85, runs per wicket, takes 5 wickets for 52 runs and thereby decreases his average by 0.85. The number of wicket...
- The average salary of 30 employees was calculated as ₹42,000. Later it was found that one employee’s salary was taken as ₹49,000 instead of ₹39,000...
The average of 10 numbers is 42. If the average of the first 4 numbers is 24 and the average of the last three numbers is 36, then what is the average o...
Average of 20 numbers is 90. Average of first 8 numbers is 92 while average of last nine numbers is 40. If ninth number is 25% less than the tenth numbe...
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