Advertisements
Advertisements
प्रश्न
Which of the following are co-primes?
विकल्प
91 and 72
34 and 51
21 and 36
15 and 20
Advertisements
उत्तर
The correct option is 91 and 72.
The H.C.F. of 72 and 91 is 1.
So, they are co-primes.
Option 34 and 51 is not correct because 34 and 51 have 17 as their H.C.F.
Option 21 and 36 is not correct because 21 and 56 have 3 as their H.C.F.
Option 15 and 20 is not correct because 15 and 20 have 5 as their H.C.F.
APPEARS IN
संबंधित प्रश्न
Are co-primes always primes? If no, illustrate your answer by an example.
Express the following odd number as the sum of three odd prime number:
35
Express the following odd number as the sum of three odd prime number:
49
Which of the following is a prime number?
The LCM of two co-prime numbers is their
Fill in the blank.
Two perfect numbers are ________ and _______
Write 'T' for true and 'F' for false for the following statement.
Every even number is composite.
Write the smallest and the biggest two digit prime number
For which of the numbers, from n = 2 to 8, is 2n − 1 a prime?
Which of the following number is prime?
37
