If a and b are coprime numbers, their LCM=
ab
1
a+b
Two numbers are 15 and 45. Their HCF is 5. Find their LCM.
110
135
140
150
Prime factors of the smallest 3 digit number is
2 x 5
22 x 52
23 x 52
22 x 53
Which of the following number is divisible by 9?
631
729
949
223
Which of the following is a coprime number?
(5,6)
(2,4)
(3,9)
(4,12)
If a and b are coprime numbers, their HCF=
What is the relation between H.C.F and L.C.M of two natural numbers.
product of two given numbers = product of their L.C.M and H.C.F
sum of two given numbers = product of their their L.C.M and H.C.F
Difference of two given numbers = product of their their L.C.M and H.C.F
None of these
What number should replace the star in 3*35 so that it may become divisible by 3
2
3
4
Which of the following is a prime triplets?
{1,2,3}
{2,3,7}
{3,5,7}
{4,3,7}
____ is the factor of every number?
0
