As Per District Boards’ (i) Which of the following number is not a perfect square ? [Biswanath’23] (a) 441 (b) 729 (c) 1369 (d) 4658 (ii) Which of the following is a square of an odd number ? [Kamrup’23] (a) 256 (b) 169 (c) 546 (d) 754 (iii) If a,b.c.d are in proportion,then [Bongaigaon’23] (a) […]