Please help Math

Question

Write the following set in builder notation form
{3, 5, 7, 9, 11, 13, 15, 17, 19, 21}

?
a. {x|x=3n+1;n, an integer between 1 & 10 inclusive}
b. {x|x=2n+1;n, an integer between 1 & 10 inclusive}
c. {x|x=n+1;n, an integer between 1 & 10 inclusive}
d. {x|x=3n+1;n, an integer between 1 & 10 inclusive}
e. {x|x=4n+1;n, an integer between 1 & 10 inclusive}

 

Thank you

Answer 1

Hi Kai, the answer is b.

 

When n = 1, x = 3.

When n = 2, x = 5.

...

When n = 10, x = 21.

 

Questions