Question

determine if the given group of objects is a well defined or not well defined
1. list of great NBA basketball players
2. Odd numbers from 1 to 15 ​

Answer 1

Answer:

135791113151719212325

Answer 2

$\underline{ \pink{ Well \: defined \: objects : }}$

Well defined collection of objects mean that

1. All the objects in the set should have a common property.
2. It should be possible to decide whether any given object belongs to the set (or) not.

$Here , 1. List \: of \: great \: NBA \: basketball \\players \: \red { is \: not \: a \: set } \: as \: there \:is \\no \: specific \: player \: determine \: whether \\player \: is \: great \: or \: not .$

$2. Odd \: numbers \: from \: 1 \: to \: 15 \\\green { is \: a \: well \: defined \: group }$

$Required \: collection = \{ 1,3,5,7,9,11,13,15\}$

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