Find three arithmetic mean between 30 and 66.?
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Find three arithmetic mean between 30 and 66.?
Find three arithmetic mean between 30 and 66.?
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33,41.25,49.5,57.75,66
step by step:
an=a1(n-1)d
66=30(5-1)d
66=30(4)d
66-30=4d
33=4d
__ __
4 4
8.25=d