if a is a necessary condition for b then which of the following is true (points 1) course hero

When is a condition necessary for a condition B?

A is a necessary for condition for B, B guarantees A. (If B is true, then A must be true. If B occurs, hen A must occur. B can't occur without A. All Bs are As. B only if A) Necessary and (Jointly) Sufficient Conditions. A is necessary and sufficient for B, guarantees B and B guarantees A.

What is a necessary condition for being a Bachelor?

These two conditional claims, "If A, then B" and "A, only if B" refer to two different kinds of conditions: necessary conditions and sufficient conditions. Necessary Conditions. If we say that "x is a necessary condition for y," we mean that if we don't have x, then we won't have y. Or put differently, without x, you won't have y.

Is the foregoing a complete set of necessary conditions?

Sep 19, 2016 · "A is sufficient for B" means "A is enough for B" which means "If A happens, B happens" which means "Whenever A happens, B happens" which means "B necessarily happens if A does" which means "B is necessary for A." In other words "B is necessary for A" does not imply that if B happens, then A does. It implies that if A happens, B does, which is equivalent to …

Is B necessary for a to happen?

The _ (then-clause) of a true conditional statement provides a necessary condition for the truth of the _ (if-clause). necessary. The consequent (then-clause) of a true conditional statement provides a _ condition for the truth of the antecedent (if-clause). A v B, ~A->B. A unless B. (2 ways) A<->B. A if and only if B.

What does it mean when you say "x is a necessary condition for y"?

If we say that "x is a necessary condition for y," we mean that if we don't have x, then we won't have y. Or put differently, without x, you won't have y. To say that x is a necessary condition for y does not mean that x guarantees y.

What does it mean when we say x is a sufficient condition for y?

If we say that "x is a sufficient condition for y," then we mean that if we have x, we know that y must follow. In other words, x guarantees y.

Is oxygen necessary for life?

Having oxygen in the earth's atmosphere is a necessary condition for human life. Certainly, having oxygen will not guarantee human life. There are many other conditions needed for human life other than oxygen in the atmosphere. Being 18 years of age is a necessary condition for being able to buy cigarettes legally in North Carolina.