A: ### Quick Answer

**There are 90 four-digit numeral palindromes ranging from 1001 to 9999.** There are also 90 three-digit palindromic numbers, 9 two-digit palindromes and 900 five- and six-digit numeral palindromes.

A palindromic number refers to a numeric value that remains unchanged when its digits are written backwards or forwards. Some examples of four-digit palindromes include 1001, 6886, 4334 and 9559. The term palindromic is derived from palindrome, which is also used to refer to words whose spelling remains the same when its letters are written backwards like "rotor" or "radar." Palindromes can be found in other numeral system other than decimal. There are several palindromic binary numbers, such as 1111 and 1001.

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## What is pi in math?

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Full Answer >**Pi is a mathematical constant and irrational number representing the ratio of a circle's circumference to its diameter with a value of approximately 3.1416.**Even though mathematicians using computers are able to calculate an approximate value for pi to 2.6 trillion digits, its exact value remains unknown. The symbol for this constant is the lowercase Greek letter pi.Filed Under: - Q:
## What does "e" mean in math?

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Full Answer >**The number notated by "e" is a famous irrational number known as Euler's number that is approximately equal to 2.72.**The number "e" has no final digit and has been calculated accurately to over one trillion digits.Filed Under: - Q:
## What is "term" in math?

A:A term in mathematics is defined as a number, variable or number-variable combination in an algebraic expression or equation. Terms are separated from each other by a plus, minus or equal sign.

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## What does "prime" mean in math?

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Full Answer >**In mathematics, a prime number is any whole number greater than one that has no positive factors other than one and itself.**For example, the number 17 is prime, because its only factors are one and 17.Filed Under: