Bihar Board (BSEB) - Class 9

Secondary Mathematics question bank (Mathematics (गणित))

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Q1.

समानांतर श्रेढ़ी (A.P. - Matric Board): यदि प्रथम पद $a$ व सार्व अंतर $d$ हो, तो $n$वां पद 'संख्या पद्धति (Number Systems)' क्या होगा?

(A)

$a_n = a + (n - 1)d$ (संख्या पद्धति (Number Systems))

(B)

$a_n = a + nd$

(C)

$a_n = a - (n - 1)d$

(D)

$a_n = 2a + nd$

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Q2.

त्रिकोणमिति (Trigonometry - 20 Marks BSEB): 'संख्या पद्धति (Number Systems)' के संबंध में सर्वसमिका $\sin^2\theta + \cos^2\theta$ का मान क्या है?

(A)

$1$ (संख्या पद्धति (Number Systems))

(B)

$0$

(C)

$-1$

(D)

$\tan\theta$

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