CBSE Guess > Papers > Question Papers > Class XII > 2003 > Mathematics > Delhi Set -III MATHEMATICS—2003 (Set III—Delhi) Note: Except for the following questions, all the remaning questions have been asked in Set I, Set II .D. B., 2003. SECTION - A Q. 3. If Q. 8. Evaluate: Q. 13. In a correlation analysis, the following values are obtained about the variables Q. 15. Prove that: Q. 16. Using matrix method, solve the following equations: SECTION - B Q. 20. Three forces P, Q and R acting at Q, the circumcentre of a triangle ABC, along OA, OB and OC are in equilibrium. Show that Q. 25. Solve the following differentia equation: SECTION - C Q. 20. Calculate the first four moments of the following data about 5: Q. 22. A merchant in London buys dollars when
Q. 23. A, B, C and D entered into a partnership. A, B, C respectively subscribed
CBSE 2003 Question Papers Class XII
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show that 
rate is
and sells when it falls to
. If he makes a profit of
in the transaction, find his original investment. 
part of the capital and rest was subscribed by D. D is working partner and gets 4% of the total profit for that. The rest is divided amongst A, B, C and D in the ratio of their capitals. Find the shares of A, B. C and D in a total annual profit of Rs. 10,00,000. 
