Answer:
180=2^2×3^2×5
Step-by-step explanation:
We have to obtain the factors of 180 which are prime numbers
A prime number being a number with only 2 factors.That is 1 and the number itself.
For example 5 only has 2 factors 1 and 5⇒5=1×5
Here are the first few prime numbers
2,3,5,7,11,13,.....
A number which is not prime is a composite number. Composite numbers have more than 2 factors. All composite numbers can be expressed as a product of prime factors.
Answer:
The second one
Step-by-step explanation:
100/5 is 20/fifth so 4/5 of 100 is 80
80/4 is 20/quarter so 3/4 of 80 is 60
60/3 is 20/third so 2/3 of 60 is 40
40/2 is 20
the answer is N=20