The set S contains nine numbers. The mean of the numbers in S is 202. The mean of the five smallest of the numbers in S is 100. The mean of the five largest numbers in S is 300. What is the median of the numbers in S?
Showing posts with label IIM C. Show all posts
Showing posts with label IIM C. Show all posts
Wednesday, October 5, 2011
Problem of the day 5th Oct 2011
The set S contains nine numbers. The mean of the numbers in S is 202. The mean of the five smallest of the numbers in S is 100. The mean of the five largest numbers in S is 300. What is the median of the numbers in S?
Wednesday, September 28, 2011
Problem of the Day 28 Sept 2011
A good approximation of π is 3.14. Find the least positive integer d such that if the area of a circle with
diameter d is calculated using the approximation 3.14, the error will exceed 1.
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Tuesday, September 27, 2011
Problem of the Day 27 Sept 2011
The diagram
below shows some small squares each with area 3 enclosed inside a larger
square. Squares that touch each other do so with the corner of one square
coinciding with the midpoint of a side of the other square. Find integer n such that the area of the shaded
region inside the larger square but outside the smaller squares is √n
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Monday, September 26, 2011
Problem of the day 26 Sept 2011
Let a1= 2 and an+1 = 2an + 1. Find the least value
of an which is not prime.
(a) 47 (b) 4
(c) 5
(d) 95
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