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Biodegradation is the disintegration of organic materials by bacteria, fungi, or other biological means. It is often associated with environmentally friendly waste management systems, as it involves the breakdown of organic matter without releasing harmful substances.
862 - 37 – ? = – 432
{(420 ÷ 28)% of 1400} ÷ 7 = ?
121/? = ?/144
32 of (16/8) of (30/24) of (120/x) = 30
(30% of 400 - 20% of 540 + 35% of 1000) = ?
(√1296 – 12) × 5 = ? + 40
25% of 240 + √? = (2/3) × 120
{(80% of 650 + 25 × 12) – 20 × ?} = 760
Simplify the following questions:
(11) 8.5 × (121) 5.5 ÷ (1331) 5.5 = (11) ?
...{(? × 15) + (? × 45)} – 120 = 360
