Hướng dẫn

E = x ∈ N * | x < 8

Hướng dẫn

E = x ∈ N * | x < 7

a, F = {x ∈ N|100≤x≤999}

b, E = {x ∈ N*|x<8}

\(F=\left\{x\in N|50< x< 300\right\}\\ E=\left\{x\in N|0< x< 7\right\}\)

F={x∈N|50< x <300}

E={x∈N|0<x<7}

F={ a ∈ N I 51 ≦ x ≦ 299 }

A={x ∈ Nlx chia hết cho 3;x ≤15}

A={x\(\in\)N|\(\left\{{}\begin{matrix}x\le15\\x⋮3\end{matrix}\right.\)}

D={x∈N∣(x−1)⋮4∣0<x<18}

D={x thuộc N |x cách 4 đơn vị}

F = {x \(\in\) N / \(x=4k+1;k\in N;\) 0 ≤ k ≤ 5 }

a) \(F=\left\{x\inℕ|10\le x\le99\right\}\)

b) \(E=\left\{x\inℕ^∗|x\le4\right\}\)

a)     \(F=\left\{x\in N|9< x< 100\right\}\)

b)     \(E=\left\{x\notin N|0< x< 5\right\}\)