Question

Find which of the following sets are disjoint sets.

• A. $P=\{10,20,30,40\}$
  $Q=\{15,25,35,45\}$
• B. $P=\{2,4,6,8,10\}$
  $Q=\{1,3,5,7,8\}$
• C. $P=\{x:x\text{is letter in the 'FLOWER'}\}$
  $Q=\{x:x\text{is letter in the 'FLOOR'}\}$
• D. $P=\{\text{S},\text{U},\text{N}\}$
  $P=\{\text{S},\text{T},\text{A},\text{R}\}$

Answer 1

The correct option is A $P=\{10,20,30,40\}$

$Q=\{15,25,35,45\}$
In all given sets only Option A is disjoint sets, rest all are overlapping sets.