The mean of prime numbers between 20 and 45 is:
The prime numbers between 20 and 45 are 23, 29, 31, 37, 41, 43.
mean =Â $$\frac{sum\ of\ data}{number\ of\ data}$$
=Â $$\frac{23+29+31+37+41+43}{6}$$
= $$\frac{204}{6}$$
= 34
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