Answer: 1st; (-5, 1)
2nd;(-3, 1)
I’m pretty sure this is it, I’ve done questions like this for a while now, I think I got it right, sorry if I didn’t I tried my best.
Answer:
1236
The first four-digit number where all the digits are different, one being bigger than the one after it.
density= mass/volume
mass= densiy x volume
mass= 6.3 g/mm^3 x 30mm^3= 189 g
I think answer should be the first one