1.

1). 22.22). 0.023). 1.934). 10.02

Answer»

Rule:

If (a/b) = (c/d), then,

Componendo-

→ (a + b)/b = (c + d)/d

Divinendo-

→ (a - b)/b = (c - d)/d

Now, given that m/n = 9/7, then according to the rule-

⇒ (m - n)/n = (9 - 7)/7

= 2/7

Now, cube of 2/7

= (2 × 2 × 2)/(7 × 7 × 7)

= 8/343 = 0.02

Hence, the REQUIRED answer is 0.02.



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