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2 D 31883-A
ECO 3B 03—QUANTITATIVE METHODS FOR ECONOMIC ANALYSIS—I
(Multiple Choice Questions for SDE Candidates)

1. Write the function in standard form : y=(x+5)(x-7) :

(A) x? -2x-35. (8) 2 + 2 + 35.
(ಲ) + 2: - 35. 2) ८-2-35.
2. 2°} equals:
(A) 2. (B) न
9
(C) -2. (D) None of these.

3. Logarithm of 25 to the base 5 is :
(A) 5. (B) 125.

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(C) 2. (D)

4, The equation x7 +4=0 isa:
(A) Cubic equation. (B) Simple equation.

(C) Quadratic equation. (D) None of these.

5 6
5. The value of the determinant | 1 18

(A) 2. (B) 38.
(ಲ) -2. (D) -38.
6. Adiagonal matrix in which all the diagonal elements are equal is called :
(A) Unit matrix. (B) Null matrix.
(C) Scalar matrix. (D) Triangular matrix.
7. If A and B are square matrices such that AB = BA, then A and B are called :
(A) Anti commutative. (B) Commutative.

(C) Associative. (D) Periodic.

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