numerical values of hypergeometric function fails? [closed]

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I want to compute the value of hypergeometric 2F1 like this.

a=1/3; b=2/3; c=5/6; x=27/32
print n(hypergeometric([2,1],[a,b,c],x))

Sage math answered 16.9608452387059. But this should be 8.0/5=1.6000000.