"A good statesman, like any other sensible human being, learns more from his opponents than from his fervent supporters. For his supporters will push him to disaster unless his opponents show him where the dangers are. So if he is wise he will often pray to be delivered from his friends, because they will ruin him. But, though it hurts, he ought also to pray never to be left without opponents; for they keep him on the path of reason and good sense. The national unity of free people depends upon a sufficiently even balance of political power to make it impracticable for the administration to be arbitrary and for opposition to be revolutionary and irreconcilable."

If FRANCE is coded as 654321 and GERMANY is coded as 9158437 , then how is YEMEN coded?

"A network of voluntary associations stands as a 'buffer' between the relatively powerless individual and the potentially powerful State."

In a certain code if 64 is written as 343 and 216 is written as $\mathbf{7 2 9}$, then how is $\mathbf{5 1 2}$ written in that code?

If the symbol $$a + b$$ means $$a - b$$, the symbol $$a - b$$ means $$a \times b$$, the symbol $$a \times b$$ means $$a \div b$$, and the symbol $$a \div b$$ means $$a + b$$, then what is the value of the expression: $$10 + 30 - 100 \times 50 \div 25$$? (All operations are to be replaced simultaneously.)

If in a certain code, 'ABCD' is written as 24 and 'EFGH' is written as 1680, then how is 'IJKL' written in that code?