question:- u and v vary directly as each other, when u is 10, v is 15. which of the following is not a possible pair of corresponding values of x and y ?
(1) 15 and 20
please answer me...
Answer key is : 2/3
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A heron stands by a fish pond trying to catch fish. The pond contains 12 blennies and 8
guppies. The number of fish caught by the heron has a Poison distribution with mean
2.5. Assuming that the heron catches fish at random, what is the probability that it
catches 2 guppies and no blennies?
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Step-by-step explanation:
Given, u and v vary directly to each other ⇒ u ∝ v. So, u : v = 10 : 15 = 2 : 3. Therefore all the pairs of numbers should be in ratio 2 : 3. Thus, (iii) 15 and 20 is the only option that does not satisfy the ratio
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