Q: What is the 100th pentagonal number?

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There is no equation - the answer is explicit in the name.A pentagonal prism has pentagonal bases. A pentagon has 5 sides. It could not be simpler!

The Nth number is (3N - 1), so the 100th number is 299 .

Five.Five.Five.Five.

100th

35.The first few pentagonal numbers are:1-1, five, 12-number, 22-number, 35-number, 51-number, 70-number, 92-number, 117, 145, 176, 210, 247, 287, 330, 376, 425, 477, 532, 590, 651, 715, 782, 852, 925, 1001-numberSource: pentagonal-number

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The 100th Fibonacci number is 354,224,848,179,261,915,075.

The 100th prime number is 541.

first triple digit pentagonal pyramidal number is 126

No. As both negative and positive numbers can be odd, there is no first odd number, and therefore no 100th odd number. The 100th odd positive number is 199.

There is no equation - the answer is explicit in the name.A pentagonal prism has pentagonal bases. A pentagon has 5 sides. It could not be simpler!

10 to the 100th is... 10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,00 .... 10 to the 100th is a googol, or a number with 100 zeroes after it.

5

square

The Nth number is (3N - 1), so the 100th number is 299 .

Five.Five.Five.Five.

A pentagonal pyramid has exactly 6 faces.and a pentagonal prisim has 7

199