Which of the following statements is true about the

120 × 195 ÷ 13 - ? = 16²

140% of 1270 + 60% of 2085 = 1881 + ‘?’% of 287

1540 ÷ 7 - 184 ÷ 8 = ?

Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.

42 * 7 * 64 * 11 * 6 *4

[3/5 of (31 + 44) – 10] ÷ 7 = ?

√10000 × √8100 - (50)² = √(?) + (80)²

150% of 850 ÷ 25 – 25 = ?% of (39312 ÷ 1512)

Find the HCF of 15x² + 8x – 12, 3x² + x – 2, 3x² - 2x, 9x² - 12x + 4

(120 × ?)/(36 × 0.2) = 200