Let M and N be integers and K = 14M + 21N. How many cases of (M,N) are there for K to take the value of 12 ?
1 out of 5
A piece of paper is about 0.2 mm thick. If you could fold it in half repeatedly 20 times, what would be the thickness, in meters, of the multilayered paper?
2 out of 5
What is the difference between the median and the mean of the following data set? {2, 6 ,14 ,26 ,24 ,30 ,20 ,18 , 28 , 32}
3 out of 5
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