The range is 11.
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Mean: 11.6 Median: 12 Mode: 10, 12, 15, 16, 5 Range: 11
The answer is 15C6 = 15*14*13*12*11*10/(6*5*4*3*2*1) = 5,005
5 6" to 5 11"
I'm assuming this is a combinations problem. nCk = n!/(k!(n-k)!) is the general equation. In your case n= 11 and k = 5 for 11!/(5!(11-5)!) = 11!/(5!*6!) = (11*10*9*8*7)/(5*4*3*2*1) = 462
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