ICSE − Q & A

In what format do we have to write the equation found?  
for e.g.. 
i) 2x-3y+1=0
ii)3y=2x+1 ; or;
iii)2x-3y=-1?

Circles... 1) prove: The bisectors of the angles formed by producing the opposite sides of a quadrilateral(provided they are not equal) intersect at right angle.

2) two circles of unit radius touch each other and each of them touches internally a circle of radius 2 units. Find the radius of the circle which touches all the 3 circles.

3) Prove that the feet of perpendiculars drawn from a point on the circumcircle of a triangle on the sides are collinear.

http://www.respaper.com/sdfg/8493-pdf.html 10 b ....plz solve it

can anyone help in remembering the concept of sales tax ....
plz. i am confused in doing the sums

If b is the mean proportion of a and c, p.t. a^2-b^2 +c^2 / a^-2 - b^-2 + c^-2 = b^4

How much percentage are you expecting guys

When we say the number cards of the club set it doesn't include ace right?( probability chapter)

http://www.respaper.com/sdfg/3786-pdf.html pls help me in 8(a)

Transactions on 10th March:
Balance at the beginning of day = 10000
Deposited 2000 , balance = 12000
Withdrawn 1000, balance = 11000
So, Balance at the day's end = 11000
If no further transactions are done in the month, 
What is the amount on which interest is given for the month??

Real Madrid won lol, DAB on them hater, hala madrid!