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The correct answer is B
The average of 10 numbers is 30. If one of the numbers is excluded, the average of the remaining numbers becomes 28. Find the excluded number.
Four numbers are arranged in ascending order. When the first two numbers are increased by the number equal to their position, and the last two numbers i...
The average age of a group of persons going for tour to Shimla is 22 years. 30 new persons with an average age of 8 years join the group and their avera...
In a class of 50 students there are 22 girls who scored an average of 35 marks in the test. What is the average marks of the boys if the class average ...
A man takes 3.5 hours to reach a friend's house, which is 50 km away from his residence. He returns home traveling at 20 km/h. Ca...
The meaning of 12 observations is 15. One more observation is included, and the new mean becomes 17. The 13th observation is.
Consider six consecutive odd numbers whose average is 34. If the highest number from this set is removed, what will be the average of the remaining five...
The average of the first four numbers is 'x+30', the average of the next 10 numbers is 'x', and the average of the remaining 6 numbers is 'x−20'. If t...
What is the average of the squares of the first 35 natural numbers?
