'a' and 'b' are two positive integers such that ab×ba=800
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a^b×b^a=800
a^b×b^a=2×2×2×2×2×5×5=(2)^5×(5)^2
if a^b=(2)^5 , then a=2 , b = 5
If a^b= (5)^2 ,then a=5 , b =2 , answer.
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