True.
A. True
It isn't. The empty set is not a proper subset of the empty set.The empty set is a subset of every set, for the following reason. "A" is a subset of "B" means that if an item "x" is an element of "A", then it is also an element of "B".(x is element of A) implies (x is element of B)Since the empty set has no elements, the left part of the implication is false. Therefore, the entire implication is true. If you have trouble grasping this last part, look up the Wikipedia article, or other sources, for "trivially true" or "vacuous truth". (Briefly, an implication, like "F implies G", can only be false if "F" is true, and "G" is false - in all other cases, it is true.)
A sample is a subset of the population.
The empty set is open because the statement: "if x in A, some neighborhood of x is a subset of A" is true! If A is empty, the hypothesis: "if x in A" is false and so the statement is vacuously true.
true
True
That's false.
false
true
False 1/3 = 0.33333333333 Repeating or 33.33333333333333 Repeating % 33% = 0.33
true
A. True
False. Vacuoles are larger in plant cells and their retention of water help with turgidity.
Probably true
Itβs true apex
false
false