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If the 'Mercury planet' is called 'Uranus planet', 'Uranus planet' is called 'Jupiter planet', 'Jupiter planet' is called 'Mars planet', 'Mars planet' is called 'Earth planet', 'Earth planet' is called 'Saturn planet', 'Saturn planet' is called 'Venus planet', and 'Venus planet' is called 'Pluto planet', then on which planet do we live?
Which of the following statements about the movement of planets is true? A. A planet's orbit is elliptical with the Sun at one of two focal points. B. The orbit of a planet is circular with the sun in the center. C. The orbit of a planet is elliptical with another planet in one of the two center-points. D. The orbit of a planet is circular with another planet in the center. 
In the following question, four statements are given followed by four conclusions I, II, III and IV. You have to consider the given statements to be true even, if they seem to be at variance with commonly known facts. Read all the conclusions and decide which of the following logically follows from the given statements disregarding the commonly known facts. Statements: All Planet are Sun. All Object are Air. All Planet are Earth. No Air is Sun. Conclusions: I. All Air being Earth is a possibility. II. Some Object are Sun. III. Some Earth are Sun. IV. No planet is Air.
Which of the following is not one of Kepler's rules for planetary bodies? A. A planet's orbit is an ellipse with the Sun at one of the two center-points. B. A line segment connecting a planet and the sun makes an equal area outside during equal intervals of time. C. The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit. D. The orbital period depends on the mass of the planet
Which of the following statements are true? (i) The orbit of a planet is elliptical with the sun at one of its foci (ii) The line joining the planet and the sun sweeps equal areas in equal intervals of time (iii) The square of the mean distance of a planet from the sun is proportional to the cube of its orbital period
Consider the following statements.
1. According to Kepler's first law, each planet moves in an elliptical orbit around the sun, the sun being at one of the foci of the ellipse.
2. According to Kepler's Second Law, the radius vector of any planet relative to the sun sweeps out equal areas in equal times, that is the areal velocity of the radius vector of the planet is constant.
Which of the statements given above is/are correct?
Which of the following is/are wrongly matched? i. Planet nearest to the earth - Mercury ii. Planet farthest from the earth - Neptune iii. Planet with the most elliptical orbit - Neptune iv. Planet with the slowest rotation - Neptune
Fill in the blank with the most appropriate word.
The planet Mercury ________ round the sun every eighty-eight days.
If a + b + c + d = 4, then find the value of $$\frac{1}{{\left( {1 - a} \right)\left( {1 - b} \right)\left( {1 - c} \right)}}$$     + $$\frac{1}{{\left( {1 - b} \right)\left( {1 - c} \right)\left( {1 - d} \right)}}$$     + $$\frac{1}{{\left( {1 - c} \right)\left( {1 - d} \right)\left( {1 - a} \right)}}$$     + $$\frac{1}{{\left( {1 - d} \right)\left( {1 - a} \right)\left( {1 - b} \right)}}$$     is?
If a + b + c + d = 4, then the value of $$\frac{1}{{\left( {1 - a} \right)\left( {1 - b} \right)\left( {1 - c} \right)}}$$     + $$\frac{1}{{\left( {1 - b} \right)\left( {1 - c} \right)\left( {1 - d} \right)}}$$     + $$\frac{1}{{\left( {1 - c} \right)\left( {1 - d} \right)\left( {1 - a} \right)}}$$     + $$\frac{1}{{\left( {1 - d} \right)\left( {1 - a} \right)\left( {1 - b} \right)}}$$     is?