A article is marked at Rs. 65 and a customer buys it for Rs. 56.16 and got two successive discount of 4% and k%. Find the value of   k?

In the following passage, some of the words have been left out. First, read the passage over and try to understand what is about. Then fill in the blanks with the help of the alternatives given. Mark your answer in the Answer-sheet.

Have you ever felt that Computer are getting under your skin? Will, you have seen nothing yet. Scientists in the United states are……(11)……computer that are so………(12)……..that they can be seen into the fining of clothes or even…….(13)….in to the human body.
These are…………..(14)…..as sub-dermal computers, and those who….(15)……then will be able to communicate through radio links to other computer arriers. Initially the……….(16)…….for this mindboggling micro-technology is …….(17)…..to be military one.
Already the US army has developed a Computer of the…..(18)……of a pill, which can be ……(19)….and allow doctors to…….(20)….the health of soldiers on training missions.
(Mark your answer 16)

Who is the author of the children's book "The Christmas Pig"?

Greatest among the numbers
$$^{3}\sqrt{9},\sqrt{3},\ ^{4}\sqrt{16},\ ^{6}\sqrt{180}$$ is

Three positive numbers are in the ratio of 11 : 12 : 15. If the sum of the squares of those numbers is 1960, then the sum of the numbers is

The ratio of the radii of two wheels is 3: 4, then the ratio of their circumferences will be.