Just the one
3 sig figs
4 sig figs the ending zero is not significant unless it was a measurement and the zero was an estimation that was part of the measurement.
Three of them
3 sig figs.
1080
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.
6.002 has four sig figs.
There are four sig figs in 60.55.
There are eight sig figs in 57.115102.
There are five sig figs in 4.1275.
There are two sig figs in 3700000.
There are 4 sig figs in 20.13
61 has 2 sig figs.
There are five sig figs