An Urn Contains 4 Red and 3 Yellow Marbles

question 74

Multiple Choice

An urn contains 4 red and 3 yellow marbles.If two marbles are randomly drawn without replacement,find the probability the second one is yellow,given that the first marble drawn is red.

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Definitions:

Major Structure

The most stable or predominant structure of a molecule among several possible ones under given conditions.

Major Structure

The most stable or dominant arrangement of atoms within a molecule out of all possible isomeric forms.

Chromic Acid

A powerful oxidizing agent made from mixing chromium trioxide or sodium dichromate with sulfuric acid, used in cleaning laboratory glassware and oxidizing organic compounds.

Oxidation

A chemical process involving the loss of electrons or an increase in oxidation state by a molecule, atom, or ion.