Elitmus Exam Numerical Ability Data Sufficiency

If m and n are two positive integers, then what is the value of mn?

(1)7m + 5n= 29
(2) m + n= 5

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Elitmus Other Question

If a = tan6 tan 42
and B = cot66 cot 78
then

(a) A = 2B (b)
1
AB
3
=
(c) A = B (d) 3A = 2B.
HOT*RED= ?