MCQs
If the HCF of
two numbers is “1” then the numbers are…………..
a) Divisors
b) Primes
c) Co-prime
Solution: Two numbers having only 1 as a common factor is called Co-prime numbers.
For Example: Factors of 6 (1, 2, 3, 6)
Factors of 25 (1, 5, 25)
The HCF of 5, 10, 15 is…………….
a) 5
b) 10
c) 20
d) 30
Solution:
Factors of 5= 5
Factors of 10= 2 × 5
Factors of 15= 3 × 5
The number, which is divisible by a number other than itself and 1, is called…
a) Prime
b) Composite
c) Even
d) Odd
Solution: یعنی1 اور خود پر جو اعداد تقسیم ہوتے ہے۔اُسے پرائم نمبر جبکہ اس کے علاوہ اور اعداد پر جو تقسیم ہوتا ہے۔ اسے کمپوزیٹس نمبرز کہتے ہیں
428 is divisible by……………..
a) 3
b) 4
c) 5
d) 7
