A= {1, 2, 3, 4, 5 ,6 ,7} how many subsets of a include {1, 3, 5} write down all the sets ({})

total no of outcomes are '15'

outcomes are shown below.

Step-by-step explanation:

A = {1, 2, 3, 4, 5 ,6 ,7}

subsets which will include {1, 3, 5}

hence, the outcome are :

{1,2,3,5}, {1,3,4,5}, {1,3,5,6}, {1,3,5,7}, {1,2,3,5,6},{1,2,3,5,7},{1,2,3,4,5}, {1,3,4,5,6}, {1,3,4,5,7}, {1,2,3,5,7},{1,2,3,5,6}, {1,3,5,6,7},{1,2,3,4,5,6},{1,2,3,4,5,7}, {1,2,3,4,5,6,7}

so the total no of outcomes are '15'

it's

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour