Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1880s 1900s 1800s 1890s 1880s 1900s 1800s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions Where was the yo-yo invented? United States Philippines England France United States Philippines England France ANSWER DOWNLOAD EXAMIANS APP
Inventions For over 500 years, paper was only available and sold as single sheets. In 1902, an inventive Australian used half size sheets of paper, a bit of glue and cardboard to create the what? Notice Board Telephone Book Notepad Calendar Notice Board Telephone Book Notepad Calendar ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the game Frisbee invented? 1900s 1890s 1870s 1920s 1900s 1890s 1870s 1920s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who came up with the idea for INSTANT MASHED POTATO? S. Tuberosum W. Raleigh K. Edwards E. Asselbergs S. Tuberosum W. Raleigh K. Edwards E. Asselbergs ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the toothbrush invented? 1790 1765 1742 1770 1790 1765 1742 1770 ANSWER DOWNLOAD EXAMIANS APP
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