Question

The LCM of two numbers is 1600. Which of the following cannot be their HCF ?
A-400
B-160
C-900
D-320

Answer 1

Answer:

LCM/HCF = 1600/200 = 8. Hence, 200 can also be the HCF of the two numbers. ∴ The only number which cannot be the HCF of the two numbers is 500.

Answer 2

Answer:

900

Step-by-step explanation:

LCM = 1600

- we know that,

HCF = product of the numbers / LCM

=>Product of the numbers

=LCM/HCF

CASE-1 :

=1600/400

=4

CASE-2 :

=1600/160

=10

CASE-3 :

=1600/900

=16/9

=1.77777778

=>900 is cannot be HCF.

CASE-4 :

=1600/320

=10/2

=5