Franklin signed the delclaration of independence in 1776.when he died in 1790,he was 84 years old. benjamin franklin was the oldest man to sign the delclaration of independence. how old was he when he signed it?

70 years old.

There was a 44-year age difference between the youngest and oldest signers. The oldest signer was Benjamin Franklin, 70 years old when he scrawled his name on the parchment.

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents