7/10 - 1/4 use common denominators
28/40 - 10/40 = 18/40 = 9/20
Answer:
f= -14
Step-by-step explanation:
There are 3 bracelets.
The first bracelet can occupy a position in 3 ways.
The second bracelet can occupy the remaining 2 positions in 2 ways.
The third bracelet can occupy the remaining position in 1 way.
The total number combinations is
3*2*1 = 6
Answer: 6
