One billion in numerals is written as 1,000,000,000. To write one billion in numerals, you will need ten figures before the decimal point. For example, seven billion translates to 7,000,000,000.
In scientific notation, a billion is any number to the power of nine: 1 x 10^{9}
A billion is equivalent to a thousand million, which explains the need for nine zeros. The value of a billion was once a subject of debate among the English and the French. The English believed a billion to be any number to the power of 12, while the French thought the power of 12 too impractical and based the billion on the power of nine. The power of nine has since become the most accepted form of the billion.
Learn MoreQuantum numbers are used to describe the energy and shape of an electron orbital within an atom. These numbers are represented by the letters n, l, m and s. The energy level quantum number, represented by the letter n, represents the energy of the electron within the orbital. This number can be equal to (1,2,3,4...). The higher the number, the further away the orbital is from the nucleus.
Full Answer >There is some dispute as to whether zero is a perfect square. It meets most definitions of a perfect square, namely that it is an integer squared. However, it does not meet the historical definition of a perfect square, which involves arranging objects in a square shape.
Full Answer >Phi is the 21st letter of the Greek alphabet and in mathematics, it is used as a symbol for the golden ratio. The golden ratio refers to a special number that is approximately equal to 1.618. It is also known as the golden section, golden mean, divine section, medial proportion, golden cut, extreme and mean ratio, golden number or divine proportion.
Full Answer >The number 121 is not a prime number. A prime number must have only two factors, 1 and the number itself. However, the number 121 has three factors as 11 is a also factor of 121 in addition to 1 and 121 itself.
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