Question

Write the following sets in the set-builder form :
(i) (3, 6, 9, 12}
(ii)
{2,4,8,16,32}
(iii)
{5, 25, 125, 625}
(iv)
{2, 4, 6, . . .} (v) {1,4,9, . . .,100}

Answer 1

@ruizgeorge HELP

Answer 2

i. {3,6,9,12} here you can see that each element can be divided by 3 then you have
{x | x is a multiple of 3 <=12}
ii. {2,4,8,16,32} here you can see that each number is a power of two, then you have:
{x | x is a power of 2 <= 32}
iii. {5, 25, 125, 625} here, each number is a power of 5, then:
{x | x is a power of 5 <=625}
iv. {2, 4, 6, ....} (v) {1, 4, 9,..... 100} I'm not sure about it, is it complete?

Answer 3

Thankyou sir

Answer 4

You're welcome!
what about the last one? is it complete?

Answer 5

ya