jessiebotello6018 jessiebotello6018
  • 02-01-2020
  • Mathematics
contestada

How many integers between 360 and 630 are there such that they have odd number of divisors?

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GrandNecro
GrandNecro GrandNecro
  • 02-01-2020

Answer:

7

Step-by-step explanation:

Concept to Know: "A number is a perfect square if and only if it has odd number of positive divisors "

Find all the squared values that lies between 360 and 630

360< 19², 20², 21², 22², 23², 24², 25² < 630

19², 20², 21², 22², 23², 24², and 25² are all the squared values that lies between 360 and 630. There are seven of those squared numbers so the answer is 7.

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