What will be the HCF of ( 2 x 3 x 7 x 9 ), ( 2 x 3 x 9 x 11 ) and ( 2 x 3 x 4 x 5 )?
Choose the correct answer.
A) 2 x 3 x 7
B) 2 x 3 x 9
C) 2 x 3
D) 2 x 7 x 9 x 11
E) None
Answer   Given factors   2 x 3 x 7 x 9; 2 x 3 x 9 x 11; 2 x 3 x 4 x 5   ∴ Required H2 x 3F = Product of common prime factors having least powers = 2 x 3   2 x 3orrect Option: 2 x 3
<result>C</result>
What will be the HCF of ( 2 x 3 x 7 x 9 ), ( 2 x 3 x 9 x 11 ) and ( 2 x 3 x 4 x 5 )?