Question
21 is divided into three parts which are in arithmetic
progression (A.P.) in such a way that the sum of their square is 179. Find the smallest part.Solution
Let the three numbers be (a-x), (a), (a +x) ATQ- a-x +a+ a+ x = 21 3a = 21 a =7 So, numbers 7-x,7,7+x ATQ- (7-x) ² +49 +(7+x) ² = 179 49+x²-14x+49+49+x²+14x = 179 2x² = 179-147 =32 x² = 16 x= 4 So, find the series = 3,7,11. the smallest part of the series =3
What is the main function of a chaff cutter in livestock farming?
The land-related reform enacted to protect tenants from eviction and secure their right to cultivate the land is known as:
Chlorine is associated to photosynthesis in production of:
Which of the following statements is/are true?
Statement A: Soil aggregation is promoted by the presence of soil microorganisms.
Statement...
Which method is NOT used for rapid virus detection?
To break the dormancy of seed, a process of scratching, or mechanically altering the seed coat to make it permeable to water and gases is done. It is kn...
Which of the following is a floating weed?
An area of 0.6 ha each of wheat and maize is irrigated daily with a discharge of 2000 litre per minute for a period of 15 hours. Each crop receives 8 cm...
Who is regarded as the father of Indian Green Revolution?
Sunflower is an ..................?
Relevant for Exams:
