The average of 3 numbers are (a+b+c)/3.
9+3+20=32
32/3=10.666666666666...
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To find thrice the difference of 20 and 11, we first calculate the difference between 20 and 11, which is 20 - 11 = 9. Then, we multiply this difference by 3 to get the final answer: 9 x 3 = 27. Therefore, thrice the difference of 20 and 11 is 27.
3 + 6 + 9 = 18/3 = 6 The average of the three values is therefore 6.
3 9 4 5 25 20 21 441 ?
20 is divisible by 2, 5 and 10. It is not exactly divisible by 3 or 9.
10+14+9=33 average=33\3=11