Mathematics
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Q. If z1 = 2 + 2i and z2 = 1 - i, find z1 + z2.
Q. If z1 = 2 + 2i and z2 = 2 - 2i, what is the value of z1 * z2? (2019)
Q. If z1 = 2 + 2i and z2 = 3 - i, find z1 + z2. (2023)
Q. If \( C = \begin{pmatrix} 1 & 0 & 2 \\ 0 & 1 & 3 \\ 0 & 0 & 1 \end{pmatrix} \), what is the determinant of C? (2022)
Q. If \( G = \begin{pmatrix} 0 & 2 & 1 \\ 1 & 0 & 3 \\ 4 & 1 & 0 \end{pmatrix} \), what is the determinant of G? (2020)
Q. In a class of 15 students, their ages are: 14, 15, 16, 14, 15, 16, 17, 18, 19, 20, 14, 15, 16, 17, 18. What is the median age? (2023)
Q. In a class of 30 students, 18 are boys and 12 are girls. If one student is selected at random, what is the probability that the student is a girl?
Q. In a class of 30 students, 18 are boys. What is the probability that a randomly selected student is a girl?
Q. In a class of 30 students, the average height is 160 cm. If the height of one student is 170 cm, what is the new average height after removing that student?
Q. In a class of 30 students, the marks obtained are as follows: 45, 50, 50, 55, 60, 60, 60, 70, 75. What is the mode of the marks? (2019)
Q. In a class of 5 students, their ages are 14, 16, 15, 18, and 17. What is the median age?
Q. In a class of 5 students, their ages are 16, 18, 17, 19, and 20. What is the median age? (2022)
Q. In a class, the ages of students are: 10, 12, 10, 11, 12, 10, 13. What is the mode of the ages?
Q. In a class, the marks obtained by students are: 45, 50, 50, 55, 60, 60, 60. What is the mode?
Q. In a class, the marks obtained by students are: 45, 55, 45, 60, 55, 45, 70. What is the mode of the marks?
Q. In a class, the marks obtained by students are: 45, 55, 45, 60, 70, 55, 55. What is the mode of the marks?
Q. In a class, the number of languages spoken by students are: 1, 2, 2, 3, 3, 4, 4, 4. What is the mode?
Q. In a class, the number of pets owned by students is recorded as follows: 0, 1, 2, 1, 3, 1, 2. What is the mode?
Q. In a class, the number of students who scored the following grades: A, A, B, B, B, C, C, D. What is the mode?
Q. In a data set of 10 numbers, if the numbers are arranged in ascending order, what is the median? (2020)
Q. In a data set of 10 numbers, the mode is 5. If the number 5 is replaced by 7, what will be the new mode? (2021)
Q. In a data set of 10 numbers, the numbers are: 2, 3, 4, 4, 5, 5, 5, 6, 7, 8. What is the mode of this data set?
Q. In a data set of 12 values: 1, 1, 2, 2, 3, 3, 4, 5, 5, 5, 6, 7, what is the mode? (2023)
Q. In a data set of 7 values: 5, 3, 8, 6, 2, 4, 7, what is the median? (2021)
Q. In a data set of the numbers 3, 7, 3, 9, 5, 3, 8, what is the mode?
Q. In a data set, the numbers 3, 7, 7, 2, 5, 7, 8, 9, 2, 3 are given. What is the mode of this data set?
Q. In a data set, the numbers are 3, 7, 7, 2, 5, 7, 4. What is the mode of this data set?
Q. In a data set, the numbers are 3, 7, 7, 2, 5, 7, 8, 5. What is the mode of the data set?
Q. In a data set, the numbers are 3, 7, 7, 2, 5, 7, 8, 9. What is the mode of the data set?
Q. In a data set, the numbers are 3, 7, 7, 2, 5, 7, 8, 9. What is the mode of this data set?
