Answer key is based on.....

[koushik]

@cse rocker: but both are completely different na ah. It may also leads to confusion

[ssh]

This is a joke... but it tells the truth....it is for understanding purpose only...
The Local author says “Jack & Jill went up the hill to fetch a pail of water, jack fell down and broke his crown and Jill came tumbling after”
and
Foreign author says “2 humans ascended a certain geological protuberance to collect hydride of oxygen whose quantity is not specified. One member Jack of rapid irregular disturbing movements encounter fatal logical gravitational error leading to complete disarray. Other member whose scope lies within disarray descends down the geographical protuberance at an acceleration, whose magnitude is controlled by the force of gravity.”
Now i guess you can understand why students prefer Local Author books.

The answer key has only the concept behind these two extracts, the one which is better fits for you,you can go on with it...

[koushik]

Yeah somesh really cool da