Question

va rog ....dau 10 pct

Answer 1

A={n€N*|n<3}

B={n€N*|2^n<8}

A=B?

n€N* si n<3 => n = 1,2,3 =>

A={1,2,3}

n€N si 2^n<8 =>

2^1 = 2 < 8

2^2 = 4 < 8

2^3 = 8 < 8

2^4 = 16 > 8 =>

n = 1,2,3 =>

B={1,2,3}

=> A=B