Aptitude - Problems on H.C.F and L.C.M - Discussion
Discussion Forum : Problems on H.C.F and L.C.M - General Questions (Q.No. 1)
1.
Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.
Answer: Option
Explanation:
Required number = H.C.F. of (91 - 43), (183 - 91) and (183 - 43)
= H.C.F. of 48, 92 and 140 = 4.
Discussion:
210 comments Page 9 of 21.
Samir said:
1 decade ago
Which is the highest five digit number which is equally divisible by 60, 80, and 90 and how to arrive this answer ?
Shital said:
1 decade ago
@Parthiban.
If there is large numbers then it is reliable method to divide and then finding highest common factor?
If there is large numbers then it is reliable method to divide and then finding highest common factor?
RAVI VARMA 501 said:
1 decade ago
Swetha and prashanth explanation is good. And abve some are all in kids formulas. . . So dont look others friends.
Sarath said:
1 decade ago
I think the smarter way will be to divide the numbers with options and check. But your speed has to be so high.
Vimalsankar said:
9 years ago
43/4 the remainder is 3. 91/4 the remainder is 3. 183/4 the remainder is 3. So, finally we get the answer 4.
Sakthivel said:
1 decade ago
How to arrive at this equation p(q2-q1)= (91-43) from 43 = pq1 + r;
91 = pq2 + r;
183 = pq3 + r;
91 = pq2 + r;
183 = pq3 + r;
Dhanasekar said:
1 decade ago
Simply try divide to divide each by the options, by this which is exactly divided then that is the answer.
Durga said:
1 decade ago
Getting answer is not important but knowing how to approach that answer is important. Thanks for Prashant.
Pabitra Bhusan Saha said:
7 years ago
Your explanation is very easy to understand and this is the best process, Thanks @Saroja and @Sourav.
RDbaby said:
1 decade ago
@ Merry.
Pratibhan meant, the common thing coming in prime factor list of all 3 nos is 2*2, i.e 4.
Pratibhan meant, the common thing coming in prime factor list of all 3 nos is 2*2, i.e 4.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers