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Multiple Choice Question with Two or More Choices Correct
Which of the following are dimensionless?
(a) Strain
(b) Relative density
(c) Poisson' s ratio
(d) Reynold' s number

Chemistry

What will be the resultant pH when 200 mL of an aqueous solution of HCl (pH = 2.0) is mixed with 300 mL of an aqueous solution of NaOH (pH = 12.0)?

Mathematics

Multiple Choice Question
If from each of the three boxes containing 3 white and 1 black, 2 white and 2 black, 1 white and 3 black balls, one ball is drawn at random, then the probability that two white and one black ball will be drawn is

(a)