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Nitrosomonas and Nitrobacter are chemoautotrophic organisms found in soil and water, and are responsible for the oxidation of ammonium to nitrite (Nitrosomonas) and nitrite to nitrate (Nitrobacter).
14 × 6 + 9 × 11 = (82 – 3) × ?
1549.8 ÷ 8.2 + 65.6 × 55 = (? × 4) + (42 × 30.5)
If (x + 1/x) = 5, then value of x3 + 1/x3 is:
3% of 3000 x?% of 2000 = 3600
1555.5 + 1000.8 – 1354.3 = ? + 52
56 x 8 – 65% of 40 = ? + 14 x √625
√ 729 × 5 – 220 % of 15 + ? = 120% of 160
Simplify the given expression
[1.5 × 1.5 × 1.5 + 2.7 × 2.7 × 2.7 + 4.8 × 4.8 × 4.8 – 3 × 1.5 × 2.7 × 4.8] / [1.5 × 1.5 +2.7 × 2.7 ...
