what is the ratio of odd numbets from numbers of even numbers to odd numbers from the set of natural numbets from 30 to 50?
Answers
Answer:
please follow me
Step-by-step explanation:
please follow me
Answer:
Step-by-step explanation:
Gívєn :
(a) number of even numbers to odd numbers from set of natural numbers from 30 to 50?
(b) prime numbers and composite numbers from set of natural numbers from 1 to 20?
Tσ fínd :
The ratio of :–
Number of even and odd numbers
Number of prime numbers
Sσlutíσn :
Odd and even numbers from 30–50.
To count the numbers fast, use this:
30+50=80
32+48=80
34+46=80
And so on and the result will be 80x5 PLUS the 40 in the middle which equals 440.
And the odd numbers
31+49=80
33+47=80
And so on and the result will be 80x5 which equals 400
Odd : Even = 440:400
:
We get 11:10.
Prime Numbers from 1 to 20: 2, 3, 5, 7, 11, 13, 17, 19
No. of Prime Numbers from 1 to 20 = 8
Composite Numbers from 1 to 20: 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18
No. of Composite Numbers from 1 to 20 = 11
The Number of Prime numbers and composite numbers from set of natural numbers from 1 to 20 =
Required Ratio = 8:11