ICSE − Q & A

http://www.respaper.com/shreyas25164909/610-pdf.html For 3a)... is the answer 192/343??
In 6c) how can we evaluate without using mathematical tables for finding the value of cos30??
Pls confirm if the answer for 10b is 1366 metre??

Solve the equation 3x^2 - x - 7= 0  Give your answer correct to two decimal places.

x= 1.73 or -1.33 is what i am getting.....

+ 1 more questions by yobro57  

Find the mean proportion between (SquareRoot27-SquareRoot18) and (SquareRoot27+SquareRoot18). I am getting 3..... anyone else?
asked by Arjun (yobro57) 8 years ago
3

http://www.respaper.com/icse/410/1816-pdf.html Question 11a) I have rechecked again and again but I keep getting Summation of FiUi as -16... i don't know whats happening

Simplify K⁴ + k² + 1

The diff. between SI AND CI is for 2 years is 19.20 when the P is 3000. Find rate
show working

+ 1 more questions by qwerty6699  

The amount with Mr. X and Mr.Y is in the ratio 8:9. Y was given 180 more. How much should be given to X to maintain the ratio? Show the working!!
asked by Qwerty (qwerty6699) 8 years ago
1

5. Mr. Christopher invests Rs. 26680 in buying Rs. 50 shares at a discount of 8%. He sells shares worth Rs. 15000 at a premium of 6% and the rest at a discount of 10%. Find his total gain or loss from the transaction. 
help please?

solve -  cos(50+theta) = sin(30+theta)

Tricky questions 
1)How many people must be there in a room to make the probability 100% that two people in the room have same birthday?
2)How many people must be there in a room to make the probability 50% that two people in the room have same birthday?

Pg.291,q.1 from selina.....pls help. ...

Anyone if knows which chapters are going to carry maximum marks