Question
Sum of the two numbers is 40 and their HCF and LCM are 8
and 48, respectively. Find the sum of reciprocal of the given two numbers.Solution
Let the two numbers be '8a' and '8b', where 'a' and 'b' are co-prime numbers. 8a + 8b = 40 Or, 8 X (a + b) = 40 Or, a + b = (40/8) So, a + b = 5 We know that product of two numbers = HCF of the two numbers X LCM of the two numbers Or, 8a X 8b = 8 X 48 Or, ab = (8 X 48)/(8 X 8) = 6 therefore, sum of reciprocals = (a+b)/(8ab) = 5/48 Hence, option a.
Who among the following likes G?
Seven people, H, I, J, K, L, M, and N sit in a straight line and face towards north however not necessarily in the same order. Only two people sit betw...
If O is related to L and M is related to N in a certain way. Then, who among the following is related to R?
Six persons J, K, L, M, N and O sit in a straight row facing north. O sits third to the right of N. J sits immediate left of M. M sits third to the left...
How many files are facing the north direction?
Who among the following person sits fourth to the left of F?
If D and F exchange their position then after the new rearrangement what is the position of A with respect to F?
Which of the following combinations is incorrect?
Six person, F, G, H, I, J and K, are placed in a row facing towards the north (not necessarily in the same order). F is placed to the immediate left of ...
Which of the following statement is/are true?
I) T sits second to the right of W
II) Only one person sits between V and Y when counte...
