Suppose a Box Contains 7 Defective Transistors and 16 Good

question 149

Multiple Choice

Suppose a box contains 7 defective transistors and 16 good transistors. If 2 transistors are drawn from the box without replacement, what is the probability that the first transistor is defective D and the second one is good G? ​

• A) Pr(D first ∩ G second) =
• B) Pr(D first ∩ G second) =
• C) Pr(D first ∩ G second) =
• D) Pr(D first ∩ G second) =
• E) Pr(D first ∩ G second) =

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Definitions:

Normally Open

Describes a switch or relay contact that is in a default open state, allowing current to flow only when the contact is actuated to close.

Normally Closed

A term referring to an electrical switch or circuit state where the contacts are closed (allowing current flow) when no actuating force is applied.

Electrical State

An electrical state refers to the condition of an electrical component or system, such as being charged, discharged, on, or off.

Drum Switch

A switch used to change the direction of rotation of an electric motor or machine tool.