I belive its C, not sure tho
Ne
NaCI I’m not sure if that is the correct answer
0,1 0,7 I think I use to do these
Answer:
0 2.598.960
Step-by-step explanation:
There are 52 different cards. Order does not matter.

Answer:
1350
Step-by-step explanation:
use binomial general term expression for (r+1)th term
get the power of x in terms of r.
equate the expression to -2 and solve for r.
replace value of r and calculate the coefficient.