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The Mendeleev's periodic law is an arrangement of elements in increasing order of their atomic masses as Mendeleev's periodic law states that, the physical and chemical properties of elements are a periodic function of their atomic masses.
Find the unknown value of' x' in the proportion $$(5x + 1) : 3 = (x + 3) : 7
? % of 1200 = 20% of 30% of 3600
Find the value of ‘y’ if (2/7) × y = 0.79 – 1.77 ÷ 3.
(6.013 – 20.04) = ? + 9.98% of 5399.98
15.50% of 6240 – 426.31 = ?
Evaluate: (768÷16)×(125÷25)−(81÷9)×12
44.99% of 499.98 × (3.30/7.40)% of 1399.97 + 10.02 = ?
690 ÷ (75% of 460) = ? ÷ (50% of 160)
((1024)n/5 × (42n+1 ))/(16n × 4n-1 ) = ?