There are three sig figs in 1.05.
there are 3 sig figs. 4, 0, and 5 are the sig figs
5 sig figs
There are four sig figs in 1.032
There are four sig figs in 2.905.
There are 4 sig figs in 20.13
There are four sig figs in 60.55.
There are eight sig figs in 57.115102.
There are three sig figs in 4890.
All five of them are sig figs
61 has 2 sig figs.
There are five sig figs
6.002 has four sig figs.