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Maths Puzzle
The value of ( 9-22 – 9-23 ) is
(a)1 (b)8x9^-23 (c)9x9^-22 (d)none of these
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self Other Question
If 2p = 4q = 8r and ( 1/2p + 1/4q + 1/6r ) = 24/7 then the value of r is
(a)7/16 (b)7/32 (c)7/48 (d)7/64
Two cubes each with side b are joined to form a cuboids. What is the surface area of this cuboids?
(a)12b^2 (b)10b^2 (c)6b^2 (d)4b^2