if the product of HCF and LCM of two natural nos is 378000 then which of the following can b their HCF: a) 66 b) 130 c) 34 d) 20
bjahnavi:
do we know at least one of the nos?
Answers
Answered by
70
d)20 HCF* LCM = a* b where a and b are the numbers
LCM = a* b whole divided by HCF
Only when the HCF is 20 we get a proper value for LCM. For the rest of the options the LCM are in decimal form.
Therefore the HCF must be 20 in this case.
LCM = a* b whole divided by HCF
Only when the HCF is 20 we get a proper value for LCM. For the rest of the options the LCM are in decimal form.
Therefore the HCF must be 20 in this case.
k I agree bt how can u predict that oder ans r in decimal
there is a formula
hcf*lcm = product of the 2 nos.
using that and the options it is easy to find the answer as YASUMMU did
ya I know dis 1 bt how can v say dat ans ll b in decimal
kk sorry I got it
thnx
what ever
your welcmn
Answered by
27
i think the answer will be [d] 20
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