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THIRD SEMESTER B.A. DEGREE EXAMINATION
NOVEMBER 2017

(CUCBCSS—UG)
Economics
ECO 3B 03—QUANTITATIVE METHODS FOR ECONOMIC ANALYSIS—I
Time : Three Hours Maximum : 80 Marks
Section A (Objective Type)
Answer all questions.

Each question carries 34 mark.

1. 2x3~ 54 = 0, the value of x is
(a) 9. (b) -9.

(c) 3. (d) -3.

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2. Find the value of [256]4 15

(a) 16. (b) 8.
(c) 4. (d) 2.
3. For an orthogonal matrix AAT =
(a) Identity matrix. (b) The matrix A.
(c) Zero matrix. (d) None of these.
4. The order of a matrix A is m x n, that of B is n x q then the order of AB is
(a) nxn, (b) mxn.
(c) mxq. (d) nxq.
5. A function f (x) is called an even function, if
(a) f(-x)=-f (=). ൪) {^ (->) ={ (>).
(ಲ 7 (25) =f (x) (d) None of these.
6. Which of the following is a mathematical average ?
(a) Median. (b) Mode.
(c) Geometric mean. (d) None of these.

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