CBSE [ Delhi ]_X_Mathematics_2005_Set I
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Q1
Solve the following system of linear equations :
Marks:3Answer:

Q2
Express the following as a rational expression in lowest terms:
Marks:3Answer:
Out of Syllabus 
Q3
Find 10th term from end of the A.P. 4, 9, 14,..254. Marks:3Answer:

Q4
Solve for x :
abx^{2} + (b^{2}  ac)x  bc = oMarks:3Answer:

Q5
Find the L.C.M. of the following polynomials : 2x^{2}  128, x^{2}  9x + 20, x^{2}  16. Marks:3Answer:
Out of syllabus. 
Q6
Solve for x :
Marks:3Answer:

Q7
Find the number of terms of the A.P. 54, 51, 48 ... so that their sum is 513.
Marks:3Answer:

Q8
If the nth term of an A.P. is (2n + 1), find the sum of first n terms of the A.P. Marks:3Answer:

Q9
A loan of Rs 10,815 is to be returned in three equal halfyearly installments.Calculate the amount of each installment, if the rate of interest is per annum, compounded halfyearly. Marks:3Answer:
Now not in syllabus 
Q10
A fan is available for Rs 970 cash or Rs 210 as cash down payment followed by three equal monthly installments of Rs 260 each. Find the rate of interest charged under installment plan.
Marks:3Answer:
Now Not in syllabus