Q1 of 56 Page 17

If H.C.F and L.C.M of two numbers are 9 and 90 respectively. If one number is 18, find the other number.

Given H.C.F of two numbers = 9

L.C.M of two numbers = 90


One number = 18


Another number = ? (let it be x)


According to the formula


L.C.M × H.C.F = Product of the Numbers


⇒ A × B = L.C.M (A, B) × H.C.F (A, B) where A, B are two numbers


⇒ 18 × x = 90 × 9


⇒



Hence the other number is 45.


More from this chapter

All 56 →
2

If the H.C.F of 85 and 153 is expressible in the form of 85 m – 153, then find the value of m.

 3

A number when divided by a divisor leaves a remainder of 5 and when divided by twice the divisor leaves a remainder of 45. Find the divisor?

 4

Write the nearest number to 1240 which is divisible by 11?

 5

L.C.M of two numbers is 14 times their H.C.F. The sum of L.C.M and H.C.F is 600.

If one number is 280 find the other?