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A sphere and a hemisphere have the same radius. Then the ratio of their respective total surface area is:
For a triangle ABC, D, E, F are the mid points of its sides. If ∆ABC = 24 sq.units then ∆DEF is
What number should be subtracted from both the terms of the ratio 11 : 15 so as to make it as 2 : 3.
A can do a piece of work in 16 days and B in 24 days. They take the help of C and three together finish the work in 6 days. If the total remuneration for the work is 400. The amount (in rupees) each will receive, in proportion, to do the work is
The value of sin2 65º + sin2 25º + cos2 35º + cos2 55º is:
Each of the two circles of equal radii with centers at A and B pass through the centre of one another. If they cut at C and D then ∠DBC is equal to:
The marked price of an article is Rs.500. A shopkeeper gives a discount of 5% and still makes a profit of 25%. The cost price of the article is:
In the following number series a wrong number is given. Find out that number.
8, 18, 40, 86, 178, 370, 752
A right pyramid 6 m high has a square base of which the diagonal is √1152 m. Volume of the pyramid is:
The average of 11 numbers is 63. If the average of first six number is 60 and the last six number is 65 then the 6th numbers is:
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