**a single thing, person, or group forming part of a whole**There are 36 units in my apartment building. 2 : the least whole number : one. 3 : a fixed quantity (as of length, time, or value) used as a standard of measurement An inch is a unit of length.

What makes up a water molecule?

**bond between oxygen and hydrogen in a water molecule**.

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Units are a simple way of expressing the quantity of pure alcohol in a drink. One unit equals **10ml or 8g of pure alcohol**, which is around the amount of alcohol the average adult can process in an hour.

There are seven basic units in the SI system: the **meter (m), the kilogram (kg)**, the second (s), the kelvin (K), the ampere (A), the mole (mol), and the candela (cd).

In mathematics, a singleton, also known as a unit set, is **a set with exactly one element**. For example, the set {null } is a singleton containing the element null. The term is also used for a 1-tuple (a sequence with one member).

A unit may also mean **the standard units used for measurement**. Another definition of unit is an individual thing or person regarded as single and complete but is also part of a whole or group. We also use the word unit while referring to the unit price of an item. It means the cost per item, per liter or per kilogram.

How to Find Unit Rate? In a unit rate, the denominator is always 1. So, to find unit rate, **divide the denominator with the numerator in a way that the denominator becomes 1**. For example, if 50km is covered in 5.5 hours, the unit rate will be 50km/5.5 hours = 9.09 km/hour.

- Length – meter (m)
- Time – second (s)
- Amount of substance – mole (mole)
- Electric current – ampere (A)
- Temperature – kelvin (K)
- Luminous intensity – candela (cd)
- Mass – kilogram (kg)

- Units to measure the length. The units of measuring length are millimeter (mm), centimeter (cm), meter (m) and kilometer (km).
- mm and cm.
- Fact: 1 cm = 10 mm.
- Conversion: cm → mm: Multiply by 10. …
- cm and m.
- Fact: 1 m = 100 cm.
- Conversion: m → cm: Multiply by 100. …
- Fact: 1 km = 1000 m.

The local unit is **an enterprise or part thereof** (e.g. a workshop, factory, warehouse, office, mine or depot) situated in a geographically identified place.

- Finite Set. A set which contains a definite number of elements is called a finite set. …
- Infinite Set. A set which contains infinite number of elements is called an infinite set. …
- Subset. …
- Proper Subset. …
- Universal Set. …
- Empty Set or Null Set. …
- Singleton Set or Unit Set. …
- Equal Set.

Here B is a singleton set because there is only one prime number which is even, i.e., 2. **Finite Set**: A set which contains a definite number of elements is called a finite set. Empty set is also called a finite set.

Definition: The number of elements in a set is called **the cardinal number, or cardinality, of the set**.

The definition of a unit is a fixed standard amount or a single person, group, thing or number. An example of a unit is **a single apartment in an apartment building**. … The centimetre is a unit of length.

are, unit **of area in the metric system**, equal to 100 square metres and the equivalent of 0.0247 acre. Its multiple, the hectare (equal to 100 ares), is the principal unit of land measurement for most of the world.

**a person or thing that is very large and impressive**: I’m delighted he’s playing. He’s definitely a unit.

In writing, the **names of SI units are always written in lowercase**. However, the symbols of units named after a person are capitalized (e.g., ampere and A). These symbols are not abbreviations, so periods are not required.

The unit number is, in simplest terms, **the basis upon which all other numbers are defined**. In the real numbers (and all number systems contained within the reals), this unit is 1. All integer numbers are merely multiples of 1. … The concept of a number is merely a representation of a quantity of units.

The SI unit of current is **ampere** which measures the flow of electric charge across a surface at the rate of one coulomb per second. Since the charge is measured in coulombs and time in seconds, so the unit is coulomb/Sec (C/s) or amp.

A standard unit is **a constant unit of measuring a quantity which is known** and is used as a reference to measure the same quantity of other objects that are unknown.

Volume is the measure of the 3-dimensional space occupied by matter, or enclosed by a surface, measured in cubic units. The **SI unit of volume is** the cubic meter (m3), which is a derived unit. … Milliliter (mL) is a special name for the cubic centimeter (cm3).

When **the expenditures or value of production of an item is divided by the quantity**, the result is known as a unit value. Context: The unit value of a set of homogeneous products is the total value of the purchases / sales divided by the sum of the quantities.

A unit is an **internationally accepted standard for measurements of quantities**. Measurement consists of a numeric quantity along with a relevant unit. Units for Fundamental or base quantities (like length, time etc.) are called Fundamental units.

A unit is **an element in a ring that has a multiplicative inverse**. If is an algebraic integer which divides every algebraic integer in the field, is called a unit in that field. A given field may contain an infinity of units. The units of are the elements relatively prime to .

For example, the meter (m) is the unit of measurement for length in the metric system. When an object is said to be 4 m long, that means that the object is **four times** as long as the unit standard (1 m). The term standard refers to the physical object on which the unit of measurement is based.

As adjectives the difference between standard and unit is that standard is falling within an accepted range of size, amount, power, quality, etc while **unit is for each unit**.

**Local unit** of government means a state university or college or a county, city, village, or township.

A set is **a collection of objects, things or symbols which are clearly defined**. The individual objects in a set are called the members or elements of the set. The following table shows some Set Theory Symbols.

OperationNotationMeaningIntersectionA∩Ball elements which are in both A and BUnionA∪Ball elements which are in either A or B (or both)DifferenceA−Ball elements which are in A but not in BComplementˉA (or AC )all elements which are not in A

In mathematics, **the empty set** is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. … Any set other than the empty set is called non-empty. In some textbooks and popularizations, the empty set is referred to as the “null set”.

**Equal Sets** – Two sets that contain exactly the same elements, regardless of the order listed or possible repetition of elements.

Here, well-defined means that **any given object must either be an element of the set, or not be an element of the set**. … Memorize: We say that a set A is a subset of a set B if every element of A is an element of B (i.e., x ∈ A ⇒ x ∈ B). If A is a subset of B we write A ⊆ B, and otherwise we write A ⊆ B.

The symbol ∈ indicates **set membership** and means “is an element of” so that the statement x∈A means that x is an element of the set A. In other words, x is one of the objects in the collection of (possibly many) objects in the set A.

A set is usually denoted by a capital letter, such as A, B, or C. An element of a set is usually denoted by a small letter, such as x, y, or z. A set may be described **by listing all of its elements enclosed in braces**. For example, if Set A consists of the numbers 2, 4, 6, and 8, we may say: A = {2, 4, 6, 8}.

Answer: Two sets that contain the same number of elements are called **equivalent sets**.

The unit **can be in any type of residence**, such as a house, apartment, or mobile home, and may also be a single unit in a group of rooms. Essentially, a housing unit is deemed to be a separate living quarter where the occupants live and eat separately from other residents of the structure or building.

Definition of base unit : one of a set of fundamental units in a system of measurement that is based on a natural phenomenon or established standard and from which other units may be derived The base units of the International System of Units are the **meter, kilogram, second, ampere, kelvin, mole, and candela**.

A unit is **any standard used for making comparisons in measurements**. Unit conversions allow for measurements of a property that have been recorded using different units—for instance, centimeters to inches.