Bemmelen factor is known in soil science as a conversion factor of 1.724 for estimating soil organic matter (OM) from soil organic carbon content (OC).
12.5% of 45 % of 480 + 957/29 = ? -14 × 15
(√ 1444 ÷ 5) × 3.25 = ?
55% of ? = 45 + 20 × 6
∛21952 × 44 = ? × 14
24% of 15% of 500 + 122 = ?2 – (232 ÷ 2)
√ (122 + ? + 65) = 14
(1/3) + (2/5) + (3/4) + (11/10) = 3 – (?/12)
((12+12+12+12)÷4)/((8+8+8+8+8+8)÷16) = ?
√4761 ÷ 23 + √12769 = ? × 58
