exam Maths Puzzle Numerical Ability

what is the easiest way to solve any inquality and probility espesically when you have only one minute to solve the problem.thanks.seyed

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exam Other Question

Factor the polynomial

64^a6^b4^c6-81^d8 please help.find the length and width of rectangle ABCD . Toop left A top right D bottom left B bottom right C .between B and C is P=140 cm. between D and C is x.Thanks for helpin