Question

if x={1,3,5,7,9,11,13,15,17,19}..a={1,3,5,7,9,11} find the number of sets b belongs to x such that a b ={7,9}​

Answer 1

. Use the list/roster method to express the set of the natural numbers from 10 to 15, inclusive. ... x is a letter in music.} 3. Determine whether each set is well-defined. If it is not ... true (e) {1, 3, 5, 7, 9) = {1, 5, 9, 3, 7) false_(f) {1,3,5, 9) = {1,3,5,9} ... 5. Determine the cardinality, n(A), for each set. (a). A={1, 3, 5, 7, ..., 11} n(A) = 6.