Question
Select the number from among the given options that can
replace the question mark ‘?’ in the following series. 21, 25, 33, 49, ‘?’, 145Solution
21 + 4 = 25 25 + 8 = 33 33 + 16 = 49 49 + 32 = 81 81 + 64 = 145
The average weight of a group of 'x' friends increased by 1 kg when a person weighing 61 kg joined them. Later, when two more per...
The average temperature for the 30 days of April was 32°C. If the first 10 days of the month are excluded, the average temperature for the remaining da...
The average age of A and B is 22 years. If A is to be replaced by C, the average would be 21 years. The average age of C and A is 23 years. Find the age...
A kiosk has different brands of chips. 70% of the stores' sales are from selling potato chips. 30% of the sales are from 3 other chips and wafers. Every...
In a classroom, the average score of 15 students on a test is 44 points. If 5 new students, each with an average score of 'x' points, join the class, an...
The average age of a group of eight children is 9 years. Two children, whose ages were 7 years more and 5 years more than the average age, left. Two new...
The average of a set of 60 numbers was initially calculated as 40. However, it was later discovered that two numbers were incorrectly recorded as 68 and...
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.
The average score obtained by 26 students in a class test is 68 marks. The top place was shared by 3 people who got the same score. If the lowest score ...
The average of 27 numbers is 20.The average of first 13 numbers is 15 and that of the last 13 numbers is 18. What will be the 27th number?
