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What triangular numbers are greater than 20?

Anonymous

∙ 7y ago

Updated: 6/19/2025

Triangular numbers are generated by the formula ( T_n = \frac{n(n+1)}{2} ). The triangular numbers greater than 20 are 21, 28, 36, 45, and so on. Specifically, the first few triangular numbers greater than 20 are ( T_6 = 21 ), ( T_7 = 28 ), ( T_8 = 36 ), and ( T_9 = 45 ).

AnswerBot

∙ 1w ago

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A whole number is greater than 20?

There are infinitely many whole numbers which are greater than 20.

Which prime numbers are greater than 20 but less than 30?

23 and 29 are the two prime numbers greater than 20 but less than 30.

What whole number greater than 20?

There are infinitely many whole numbers greater than 20. The first of these is 21.

What are all the composite numbers greater than 20 and less than 30?

Composite numbers greater than 20 and less than 30 are 21, 22, 24, 25, 26, 27, 28.

What are 2 composite numbers that are greater than 20?

21 and 22.

Related Questions

A whole number is greater than 20?

There are infinitely many whole numbers which are greater than 20.

Which prime numbers are greater than 20 but less than 30?

23 and 29 are the two prime numbers greater than 20 but less than 30.

What whole number greater than 20?

There are infinitely many whole numbers greater than 20. The first of these is 21.

How many composite numbers are greater then 20 but less then 25?

3 composite numbers, 21, 22, and 24, are greater than 20 but less than 25.

How many numbers are greater than 76 but less than 89?

Twelve numbers exactly are greater than 76 and less than 89.

What number is 20 fewer than?

all numbers greater than 20! 21,22,23,24,25,26,27,28,29,30,31....infinity

What are all the composite numbers greater than 20 and less than 30?

Composite numbers greater than 20 and less than 30 are 21, 22, 24, 25, 26, 27, 28.

What prime numbers are greater than 20 but less than 30?

The numbers 23 and 29 are prime.

Which is greater -13 or 20?

Postive numbers such as 20 are necessarily larger than negative numbers such as -13.

How many whole numbers are greater than 20 and less than 30 are composite?

There are 7 composite numbers greater than 20 and less than 30:21, 22, 24, 25, 26, 27, 28

Is -0.45 greater or less than 9 over 20?

-0.45 is a negative number. 9/20 = 0.45 which is a positive number. Positive numbers are always greater than negative numbers, so -0.45 is less than 9/20.

What are 2 composite numbers that are greater than 20?

21 and 22.

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