Three
there are 3 sig figs. 4, 0, and 5 are the sig figs
5 sig figs
To one sig fig, 300 To two sig figs, 310 To three sig figs, 314
61 has 2 sig figs.
There are five sig figs
There are four sig figs in 2.905.
There are three sig figs in 1.05.
There are three sig figs in 4890.
All five of them are sig figs
There are two sig figs in 3700000.
There are four sig figs in 1.032
There are four sig figs in 60.55.