Hope this helps :) remember your conversions and just practice it's fairly easy:)
Answer:
1, 1, 2, 3
Explanation:
The numbers 1 and 8 both have 1 sig. fig.
The number 13 has 2 sig. figs.
The number 104 has 3 sig. figs.
The answer to “most of the energy released by nuclear fission in the form of _____ rays.” is GAMMA RAYS