Three marbles of various spherical sizes are placed in a hollow inverted cone one above the other. Each marble is in contact with the adjacent marble(s). Also, each marble is in contact all around with the wall of the cone. The smallest marble has a radius of 8 cm. The largest marble has a radius of 18 cm.
The radius of the middle marble is---
And minimum height of the cone s.t. largest ball doesn't protrude out of the cone.
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got 30% concession on the labelled price of an article and sold it for Rs. 8750 with 25% profit on the price he bought. What was the labelled price ?
420 females can do a work in 20 days . After they began the work 20 females left the work after every 5 days. Find the no of days required to complete the work.
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I have solved the 25th sum by options but can anyone tell me how to arrive at it. Inshort I want to know how to find infinite sum of 3+9+27+81+ and so on
If regular polygon with 15 sides, find the number of triangles that can be formed with vertices of the polygon, such that none of the sides of the triangles are taken from the sides of polygon.?
How to calculate lcm faster? Please suggest...how we can find for 2, 3 and 4 numbers...
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In an election only two camdidates contested.20% of the goters didnt vote md 120 votes were declared invalid. Winner got 200 votes more than his opponent thus he got 41% votes of the total voters on voter list. Percentage votes of defeated candidate out of total votes casted is? Any shorter way to solve this?
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The solution set for the inequation |x-1|+|x+2|<2 is a. (-infinity, - 2) U (1, infinity) b. [2, 1) c. (-1, 2) d. an empty set
Please solve 21, 22, 24 and 27
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Full question : found that the ratio of liquid soap now left in the container to that of water in it is 36:13. What was the initial amount of liquid soap in container if it is known that liquid soap is not used by anyone else?
I don't know if there is a logical reasoning group on PG for this year. But here is a question ... Each of the five girls A to E have a different hobby among painting, dancing, writing, singing and reading. B’s hobby is not dancing. A’s hobby is singing and C’s hobby is writing. E’s hobby is either painting or writing. Which among the following is the correct pair of the girl and her respective hobby?
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