Beth, ב, is the second letter in the Hebrew alphabet.

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Beth is a popular musician in Spain. She was born in Barcelona on December 23, 1981 and spent her childhood in Suria, a town near Barcelona. Her desire to discover the world and learn about other cultures has taken her on several trips abroad, including to Africa where she participated in a humanitarian aid programme. She has also lived in England for a few months after completing her studies. Back in Spain, she now shares an apartment with her cousin in Barcelona, where she combines her work as a singer with studies in musical theatre.

In 2003 she competed in the musical show Operación Triunfo. She classified second, and was elected by the audience to compete in the Eurovision Song Contest 2003. Her entry, "Dime", was a huge success in the Spanish charts. She has since recorded her first album in London and came 8th

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Beth is a fictional character, one of the four March sisters in Louisa May Alcott's Little Women.

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In mathematics, beth numbers are a sequence of infinite cardinal numbers.