Question
A, B and C start running at the same time and at the
same point in the same direction in a circular stadium. A completes a round in 720 seconds, B in 1080 seconds and C in 1800 seconds. After what time will they meet again at the starting point?Solution
Factors of 720 = 2 × 2 × 2 × 2 × 3 × 3 × 5 Factors of 1080 = 2 × 2 × 2 × 3 × 3 × 3 × 5 Factors of 1800 = 2 × 2 × 2 × 3 × 3 × 5 × 5 LCM = 23 x 33 × 5  = 1080 seconds Thus, required time = 1080 seconds = 18 minutes
At pH 9.0 of alkali soil, the concentration of OH– is
The availability of plant nutrients are more at a pH range of 6-7 except
Identify the insecticide that is not natural.
Citrus canker is caused by
The arrangement where farmers enter formal agreements with input suppliers or agribusinesses to produce certain crops or livestock under specified condi...
In a co-operative farming system, which of the following has the primary role of governing and making decisions for the collective operation of the farm?
Truly migratory fish, the migrations of which occur wholly within freshwater is classified as
Seed longevity can be increased by decreasing:
The shortest phase of mitosis cell division isÂ
Enzyme responsible for carboxylation in C3 type plants is:
