I need help with this
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Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625