Mathematics

Quiz #81

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Mathematics Quiz - 25 Questions

1

A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
2

Surface area of a sphere is 2464 cm2. If its radius is doubled, then the surface area of _________?the new sphere will be
3

In a drawer there are 4 white socks, 3 blue socks and 5 grey socks. Two socks are picked randomly. What is the possibility that both the socks are of same color?

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