The average of 9 numbers is 3. If the average of the first 8 of these numbers is 2, the 9 th number is:
A11
B12
C14
D15
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Related Questions:
A set of 51 numbers in such that if we remove the fist number, the average of the remaining numbers will be reduced by 1 from the average of all the numbers, if we remove the first and second, average be reduced by 2 from the original average of 51 numbers and so on. If average of all the 51 numbers is 1000, then which of the following is true
തുടർച്ചയായ 5 ഇരട്ട സംഖ്യകളുടെ ശരാശരി 60 എങ്കിൽ അതിലെ ഏറ്റവും ചെറിയ സംഖ്യ ഏത്?
The average of thirteen consecutive integers is 36. If two times the smallest of these 13 integers is added to the largest of these 13 integers, what will be the sum obtained?
The sum of 8 numbers is 684. Find their average.
There are 40 students in a class. Their average weight is 60 kg. Two students left the class. Then the average weight is reduced by 500 g. Find the weight of the two students who left the class (in kg).