CBSE Class 11 Maths PT-1 Question Paper 2025-26: St. Margaret School, Rohini

11th Class CBSE Board Mathematics PT-01 Examination (2025-26): St. Margaret Sr. Sec. School, Prashant Vihar, Sector 14, Rohini, Delhi-85 India

School Name:	St. Margaret Sr. Sec. School, D-BLOCK, Prashant Vihar, Sector 14, Rohini, New Delhi 110085 India
Class:	11th Standard (CBSE) – PT-01 2025-26
Subject:	Mathematics
Time Duration:	01 Hours
Maximum Marks:	25
Date:	~ June-July, 2025

SECTION – A

(Q. No 1 to 6 carry 1 mark each)

Question 01: Which of the following is a singleton set?

1. {x:x²-2x+1=0,x∈N}
2. {x: x²=1, x ∈ N}
3. {x: x²+2x+1=0, N} (d){x: x² = 7, x ∈ xEN}
4. {x:x² = 7, x ∈ N}

Question 02: If A, B, and C are three sets such that A∩B = A∩C and A∪B = A∪C, then

1. A=C
2. B=C
3. A∩B=Φ
4. A=B

Question 03: The radian measure of 50° 37’ 30” is

1. 7pi/2
2. 5pi/32
3. 9pi/32
4. pi/32

Question 04: The value of cos510° cos330° + sin390° cos120°

1. 1
2. 0
3. -1
4. 2

Question 05: The value of (1+i)⁶ + (1-i)³ =

1. -2-10i
2. 2-10i
3. -24+10i
4. 2+10i

Question 06: The value of is

1. 2i
2. -2i
3. i
4. -i

SECTION – B

(Q. No. 7 to 9 carry 2 marks each)

Question 07: On the real axis, if A = [0, 3] and B = [2, 6], then find AUB and AnB.

Question 08: Find the general solution of sin2x + cosx=0.

Question 09: Find the real value of x such that is a real number.

SECTION – C

(Q. No. 10 to 12 carry 3 marks each)

10. Draw the graph of y = tan x. Also write its domain and range.

11. , then convert it to the form of a + ib and hence find modulus Z.

12. Prove that

SECTION – D (CASE STUDY QUESTIONS)

(Q. 13 carry 4 marks)

Question 13. In a survey of 600 students in a school, 200 students are found to be taking tea and 325 taking coffee; 150 are taking both tea and coffee. Based on the above information, answer the following:

(i) How many students are taking at least one drink?
(ii) How many students are taking exactly one of the drinks?
(ili) How many students are not taking any drink?