Question

write set {1,5,15,25,...} in set-builder form.

Answer 1

Given roster form of a set { 1,5,15,25 ,...}

SET BUILDER FORM:

set { x : x = 1 and x = 5y , y is odd multiple of 5 }

Explanation:

1. First element = 1
2. Second element = 5 × 1 = 5
3. Third element = 5 × 3 = 15
4. Fourth element = 5 × 5 = 25

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