The number of elements of the set {x:x∈Z,x2=1} is :
The elements of the set A={x:x∈Z, −32<x<112} are ______ (Here, Z stands for the set of integers).
Find the cardinal number of the following sets :
(i)A1={−2,−1,1,3,5}
(ii)A2={x:x∈ N and 3 ≤x<7}
(iii)A3={p:p ∈ W and 2p−3 < 8}
(iv)A4={b:b∈Z and −7< 3b−1 ≤2} Cardinal~Number~of~set~:The number of elements in a set is called its Cardinal Number.
Let U=R( the set of all real numbers ) If A={x:x∈R,0<x<2},B={x:x∈R,1<x≤3}, then