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1 row of 180 - 2 rows of 90 - 3 rows of 60 - 4 rows of 45 - 5 rows of 36 - 6 rows of 30 - 9 rows of 20 - 10 rows of 18 - 12 rows of 15 - 15 rows of 12 - 18 rows of 10 - 20 rows of 9 - 30 rows of 6 - 36 rows of 5 - 45 rows of 4 - 60 rows of 3 - 90 rows of 2 - 180 rows of 1 - total of 18 ways within the limits of the question

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Q: How many ways can 180 books be arranged in rows containing an equal number of books?

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All atoms are in the periodic table are arranged by their atom number, which is by definition equal to the number of protons in their nucleus.

It is equal to the atomic number. Elements are arranged according to atomic number in periodic table

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Let x equal the number of books and let y equal the final number of books. (2/3)x=y

The groups are arranged according to the number of valence electrons. The elements in the same group has a same number of valence electrons. They have equal chemical properties.

The elements are arranged according to the atomic number. The number of protons is equal to the atomic number.

The atomic number is equal to number of electrons for nuclear atom. Atomic number is also equal to number of protons.Elements are arranged in order of atomic number in periodic table.The atomic number is equivalent to the number of electrons the element has. One can deduce the group of an element thorough the atomic number. Therefore, the chemical properties of an element can be determined starting fro the atomic number.The atomic number of an element is equal to the number of electrons. This number is also equal to the number of protons. The periodic table is arranged according to the atomic numbers.

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20.

(1 + 3) = 4Is this the kind of thing you have in mind ?

The big numbers are atomic numbers. They are equal to number of protons. Elements are arranged in order of increasing atomic number.

The periodic table is arranged into Groups (i.e. columns) and Periods (rows). Now, each element is assigned an atomic number which is equal to the number of protons within its nucleus. Each element is then arranged in order of increasing atomic number from left to right. There is a more indepth answer relating to how the periodic table is arranged, however this is how they are "listed".

Decile means one of the ten groups containing an equal number of the items that make up a frequency distribution.

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The number of people living there. The idea is to get it so that each elected official is elected from an area containing an equal number of voters.

Originally the number of books in circulation or on the shelves is 1219, books reported to be lost or stolen 32 and books that were sent out for repair are 24. The number of books in circulation or on shelves isÊ equal to the original number of books less books stolen or loss plus books sent for repair, to get 1163.

The atomic number represents the number of electrons in an element. In the case of natural elements, it is similar to the number of protons. The modern version of the periodic table is arranged in increasing order of the atomic number.Atomic number is equal to number of protons. It is also equal to number of electrons in neutral atom. As number of electrons change during bonding, only neutral atom is considered.

Elements are arranged in increasing order of atomic number on the periodic table. Since the atomic number is equal to the number of electrons in a free atom, then the periodic table is in order of increasing number of electrons.

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For an atom, the number of electrons are equal to its atomic number. Atomic numbers can be obtained quite easily from the periodic table since elements are arranged according to their atomic numbers.

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An Equation.

Assuming that each of the nine books is unique, that there are only nine positions open on the given shelf, and that each book can fit in each position, the answer is 9! (nine factorial) which is equal to 362,880. If the nine books are not all unique (i.e. there are two of the same book), the number should decrease taking into effect that reversing the positions of the identical books makes no overall change. If there is one additional position, the number should increase to 10! or 3,628,800. If there is more than one additional position, the number will still increase, but not to 11! or 12! since both open spaces are reversible just like the identical books.