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Chlorophyll a - C55H72O5N4Mg. Chlorophyll b - C55H7O6N4Mg. Manganese is not involved.
√121 + √961− √289 =?2
20 + 160/? × 20 = 420
x= √(4 × ∛(16 × √(4 × ∛(16 ×…… ∝)) ) )
24% of 400 × 16% of ? = 384
139 + 323 – √169 + ? = 450
Determine the simplified value of the expression: 12 × 15 - 20 + 15 + 12 - 18 + 3 × 4 + 18.
Find the value of 325 × 5 + 31 × 21 – 22 × (63 − 52).
(21 × 16 – 8) ÷ 41 = ?
132 × 3 ÷ 11 + 67 − ? = 64 ÷ 8 × 2