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What is the mean of natural numbers contained in the interval [15,64] ?

Options

  1. A36.8
  2. B38.3
  3. C39.5
  4. D40.3

Correct answer

C. 39.5

Step-by-step solution

Natural numbers contained between [15,64] numbers: 15,16,17 , 64 T_n=a+(n-1) d64=15(n-1) 1n-1=64-15n=50 gathered S_n= n 2 [a+l]= 50 2 [15+64] S_n=1975 gathered Mean of the Numbers, aligned & x = x_i n = S_n n = 1975 50 & x =39.5 aligned

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