Can u get into shape with just running situps pushups and pull-ups ?

I run a hard 3 mile run the next day it's core strength day I do ten pushups then quickly with no rest get on my back and do 20 situps then after that I do ten pull-ups .. Rest for a min then repeat I do 5 sets of this .. It burns it's hard then the next day I'm running hard again .. When i need a break I take a day off then repeat . I'm looking more toned and losing some weight . Even tho these are basic excersizes I push myself hard I run at a pace In which I'm outta breath after running the three miles and when I do my core excersizeing i go until my muscles won't carry me anymore .. Can i git into good shape this way ?