For some of these numbers it is very useful to be able to memorise them. If they are just two or three digits this is not usually too difficult, but a telephone number may be as many as twelve or more. Here are some mnemonic devices for remembering pi, and for telephone numbers. Mnemonics for the number Pi There once was a fellow from Greece,
Saratov Bridge. Saratov Bridge across the Volga River in Saratov, Russia was the longest bridge in the Soviet Union upon its inauguration in 1965. Its length is 2,803.7 meters and it connects Saratov on the right (west) bank of the Volga, with the city of Engels on the left (east) bank.
Those are impressive numbers, but if you donât require bridges to be needed to navigate over bodies of water, then the longest bridge in the world might be the Dayang-Kunshan Grand Bridge in China. Part of a high-speed railway system, that bridge stretches for 104.2 miles and provides train transport between Shanghai and Nanjing.