Ryan has 3 red lava lamps and 3 blue lava lamps. he arranges them in a row on a shelf randomly, and then randomly turns 3 of them on. what is the probability that the leftmost lamp is blue and off, and the rightmost lamp is red and on?

The answer is 7/20 :)

Step-by-step explanation:

P(leftmost lamp = red) = ½  

Leftmost must be red (1/2) and so must the leftmost lit lamp(2/5)

(1/2)(1/2) + (1/2)(1/2)(2/5) = 7/20  :)

students group

step-by-step explanation:

a person who   joins a party or a seminar can explain his feelings about that particular occasion better more than anyone else.

as bella managed a show for the students in the school and invited students to watch that show

hence

students group will be the best group to survey to find this information

c

step-by-step explanation: