Answer: 4.32
Step-by-step explanation: 1.8 x 2.4 is 4.32!
0.8 x 2 = 1.6
0.4 x 0.8 = 0.32
Solution:
The table which is about kind of jeans and it's color is
Style Color
regular light blue
loose fit indigo
boot cut washed
slim fit black
slim fit blue
(a) A regular can be chosen out of five colors, A loose fit can also be chosen in five colors,Similarly a boot cut as well as slim fit can also be chosen out of five colors.
If you consider this as a relation , total number of relation that is total jeans = 1×5 + 1×5 +1×5+1×5= 20 Jeans = 10 Pairs of jeans(Possible)
(b) Total number of jeans , if i have one pair of jeans of each possible style and color = As there are 5 colors and 4 styles , the jeans are in pair = 5×4×2=40
Number of Black color jeans = 2× black color in 4 styles= 2×4=8
Probability of an event = 
Probability of choosing a pair of black jeans at random=
Plug in random values for x and find y value
assume x = 10 then y = 430
Express as ordered pair:(10,430)