Tamil Nadu Board - Class 9

Secondary Mathematics question bank (Mathematics (NTSE Foundation))

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Q1.

Tamil Nadu SSLC Mathematics: What is the certified theorem or formula for 'Set Language (Union, Intersection, Venn Diagrams)'?


(A)
Thales Theorem, Pythagoras Theorem, or Angle Bisector Theorem equation (Set Language (Union, Intersection, Venn Diagrams))
(B)
Unverified assumption
(C)
Invalid identity
(D)
None of these
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Q2.

Sequences and Series: In an Arithmetic Progression (AP), what is the formula for the $n^{th}$ term in 'Set Language (Union, Intersection, Venn Diagrams)'?


(A)
$t_n = a + (n-1)d$ and sum $S_n = \frac{n}{2}[2a+(n-1)d]$ (Set Language (Union, Intersection, Venn Diagrams))
(B)
$t_n = a \times d^n$
(C)
No formula exists
(D)
None of these
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