Question

Aj= {n ∈ N |0 ≤ n ≤ j}
Ai= {n ∈ N |0 ≤ n ≤ i}

Aj \ Ai= {n ∈ N | i<n≤j }
Find cardinality of Aj \ Ai​

Answer 1

Step-by-step explanation:

1)A={a,b,c,d,e,f,g,h,i}

2)A={a,b,c,d,e,f,g,h}