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.
Among the following vegetables, which one is most likely to accumulate high levels of nitrate, particularly under heavy nitrogen fertilization?
Which indigenous vegetable, also known as ‘Indian ginseng’, is used both as a vegetable and in traditional medicine for energy enhancement?
Brinjal is believed to have originated in which of the following regions, according to Vavilov’s centers of origin?
Which variety of chilli is a cross between NP46A and Purired?
The basic chromosome number commonly found in Amaranthus species is:
What is the significance of the cucumber variety 'Chinese long 9930' in genomic research?
Which vegetable crop has natural resistance to both drought and soil salinity, and is therefore suitable for marginal lands?
The ‘pappus’ structure in lettuce helps in which specific biological process?
Carrot and celery belongs to which family:
Which compound is responsible for imparting the red color to tomatoes and is also a powerful antioxidant beneficial to human health?
