A set is closed under an operation if performing that operation on the elements of the sets results in another element of the set.
In other words, you can "combine" the elements of the set, and the result is also belonging to the set.
So:
- Set A is not closed under multiplication: you can choose to perform
, and 8 is not in the set. - Set B is closed under multiplication: the only multiplications you can perform are
. So, every possible multiplication gives 0 or 1 as result, and they both belong to the set. - Set C is not closed under multiplication: the multiplications you can perform are
. So, the possible results are 1, 2 and 4, but 4 does not belong to the set.
Answer:
you will be at 61
Step-by-step explanation:
Answer:
2860
Step-by-step explanation:
First, convert 2 meters into cm and then convert to mm. m to cm+200cm cm-mm= 2000. Then turn 86 centimetres into mm which is 860 mm. Lastly 2000+860=2860. Hope this helps
Answer:
b
Step-by-step explanation:
Undefined should be the answer
