CISCE Board - ICSE Class 9

ICSE Class 9 Mathematics Core question bank (Mathematics)

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Q1.

Circles (Tangent & Angle Theorems): In 'Pure Arithmetic: Rational and Irrational Numbers, Surds', the angle subtended by an arc at the centre is:

(A)

Double the angle subtended by it at any point on the remaining part of the circle (Pure Arithmetic: Rational and Irrational Numbers, Surds)

(B)

Equal to the angle at the circumference

(C)

Half the angle at the circumference

(D)

None of these

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Q2.

Matrices ($2 \times 2$): If $A = \begin{pmatrix} a & b \\ c & d \end{pmatrix}$, what is the determinant in 'Pure Arithmetic: Rational and Irrational Numbers, Surds'?

(A)

$\det(A) = ad - bc$ (Pure Arithmetic: Rational and Irrational Numbers, Surds)

(B)

$ac - bd$

(C)

$ab + cd$

(D)

None of these

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