4. Choose the correct option. Justify your choice.
(A) 1 (B) 9 (C) 8 (D) 0
The correct option is (B) = 9
.............(i)
and it is known that Therefore, equation (i) becomes,
CBSE opens post-result facilities for Class 10 main, 2nd exams 2026; apply for scanned copies by August 9
CBSE, NCERT hold joint workshop on Class 9 maths, science textbooks
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