1.

Let a,b∈N with 2≤a≤2020 and 2≤b≤2020. P,Q,R are three sets defined as P={(a,b):logab+6logba=5} Q={(a,b):b=a2} R={(a,b):b=a3}. Then which of the following is (are) correct?

Answer»

Let a,bN with 2a2020 and 2b2020.
P,Q,R are three sets defined as
P={(a,b):logab+6logba=5}
Q={(a,b):b=a2}
R={(a,b):b=a3}.
Then which of the following is (are) correct?



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