Questions on LCM and HCF 25 Aug 2012
Question for practice
The following questions are more helpful for class tenth students for all boards.
Questions 15. Find the greatest number that will divide 38, 45 and 52, leave remainders as 2, 3 & 4 respectively ?
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Ans of the previous questions is dated 23 AUGUST 2012
- The LCM of two or more fractions is the least fraction or integer which is exactly divisible by each of them.
LCM of the fractions = LCM of numerators / HCF of denominators
Question : 1/2 & 1/5
Answer : 1/1 = 1
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The HCF of two or more fractions is the highest fraction which is exactly divisible by each of the fractions.
HCF of the fractions = HCF of numerators / LCM of denominators
Question :HCF of 1/2 & 1/5
Answer : HCF = 1/10 = 0.1
38-2 = 36
ReplyDelete45-3 = 42
52-4 = 48
hcf= 6
the number is 6
Sir is the formula for L.C.M of fractions= L.C.M of numerator by H.C.F of denominator
ReplyDeleteAns.
ReplyDelete38-2 = 36
45-3 = 42
52-4 = 48
therefore, hcf of 36, 42 ,48 = 6
therefore, 6 is the greatest no. that will divide 38, 45 , 52 leaving remainders 2 , 3 , 4 respectively.