Odisha Board - Class 9

Secondary Math question bank (Mathematics (ମାଧ୍ୟମିକ ବୀଜଗଣିତ ଓ ଜ୍ୟାମିତି - ୯))

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Q1.

ସମାନ୍ତର ପ୍ରଗତି (Arithmetic Progression): ଯଦି ପ୍ରଥମ ପଦ $a$ ଓ ସାଧାରଣ ଅନ୍ତର $d$ ହୁଏ, ତେବେ $n$-ତମ ପଦ 'ବାସ୍ତବ ସଂଖ୍ୟା (Real Numbers)' କ’ଣ?


(A)
$t_n = a + (n - 1)d$ (ବାସ୍ତବ ସଂଖ୍ୟା (Real Numbers))
(B)
$t_n = a + nd$
(C)
$t_n = a - (n - 1)d$
(D)
$S_n = \frac{{n}}{{2}}(a + l)$
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Q2.

ତ୍ରିକୋଣମିତି (Trigonometry - HSC Exam): 'ବାସ୍ତବ ସଂଖ୍ୟା (Real Numbers)' ରେ ସର୍ବସମିକା $\sin^2\theta + \cos^2\theta$ ର ମାନ କେତେ?


(A)
$1$ (ବାସ୍ତବ ସଂଖ୍ୟା (Real Numbers))
(B)
$0$
(C)
$-1$
(D)
$\tan\theta$
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