Candidates are required to give their answers in their own words as for as practicable. The figure in the margin indicates full marks.
Multiple Choices
| Name:________________________ Symbol Number__________________________ Date: ___________________ |
Group A
Attempt ALL the questions.
Circle the correct answer: [1×10=10]
1. The number of proper subsets of A = {1, 2, 3, 4,5} is
a. 32 b. 25 c. 31 d. 5
2. The sum of the series 1+2+3+4+5+6+…+n is.
a. n(n+1) b. n(n-1) c. [n(n-1)]/2 d. [n(n+1)]/2
3. The value of log381 is
a. 1 b. 2 c. 3 d. 4
4. (A – B) ∪ (B – A) is denoted by
a. no(A) b. no(B) c. n(A∆B) d. n(B∆A)
5. What is the value of a if f(x) = x + a maps 1 into 2.
a. 1 b. 2 c. 3 d. 4
6. The value of
![\[ \begin{pmatrix} 1 &a &b+c \\ 1 &b &c+a \\ 1 &c &a+b \end{pmatrix} \]](https://swoadhyan.com/wp-content/ql-cache/quicklatex.com-27ad2260bfde318b4219aedc7875d6d0_l3.png "Rendered by QuickLaTeX.com")
a. a+b+c b. 3abc c. 0 d. 1+a+b+c
7. The value of i50 is
a. i b. -i c. 1 d. 0
8. is a _____________ number.
a. natural b. integer c. rational d. irrational
9. In a conic section if e = 1 then the curve is
a. Circle b. ellipse
c. parabola d. hyperbola
10. The rank of the matrix is
![\[ \begin{pmatrix} -1 &2 \\ -5 &4 \end{pmatrix} \]](https://swoadhyan.com/wp-content/ql-cache/quicklatex.com-bf8aaa5143733489ce22e002decc8119_l3.png "Rendered by QuickLaTeX.com")
a. 1 b. 2 c. 0 d. none
