Question

1.The real number a is less than the real number b if …
a.a -b is a negative number
b.b – a is a positive number
c.b – a is a negative number
d.a – b is a positive number

2.Let M = {a,b}, Then \\[2^{M}\\] is\n
a.{{a, b}, {a}, {b}, ∅}
b.{{a, b}, {a}, {b}}
c.{{a, b}, {b}, ∅}
d.{{a}, {b}, ∅}

Answer 1

1) a. a -b is a negative number

2) a. {{a, b}, {a}, {b}, ∅}