Answer:

The answer you get is the fifth number. Like in this particular case 5×17=85. 85-(21+18+17+14)=15.

Step-by-step explanation:

Hope it helped u

Answer:

75

step by step explaination:

mean = sum of all observations/ total no. of observations

15= sum of all numbers/5

[tex]15 \times 5 \: = sum \: of \: all \: numbers[/tex]

75 = sum of all numbers

hope it helps u lot

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