Question

Write each of the following sets in Roster form and write the cardinal number of each :
E = {x: x = 2n-1, n=N and n<6}​

Answer 1

Step-by-step explanation:

E = {x: x = 2n -1, n ∈ N, n < 6}

n < 6

1, 2, 3, 4, 5

2n - 1

n = 1 2(1) - 1 = 2 - 1 = 1

n = 2 2(2) - 1 = 4 - 1 = 3

n = 3 2(3) - 1 = 6 - 1 = 5

n = 4 2(4) - 1 = 8 - 1 = 7

n = 5 2(5) - 1 = 10 - 1 = 9

therefore the set E = {1, 3, 5, 7, 9}

cardinal number of set E = 5

Hope you get your answer