What should come in place of the question mark (?) in the following questions ?
Expression : 3/5 of 2/7 of ? =426
=> $$\frac{3}{5} \times \frac{2}{7} \times x = 426$$
=> $$x = \frac{426 \times 7 \times 5}{6}$$
=> $$x = 71 \times 35 = 2485$$
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