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Half-lives of two radioactive substances P and Q are 12minutes and 18minutes respectively. The initial number of nuclei of P and Q is in the ratio 1:2. After 36minutes, the ratio of the remaining number of nuclei of the substances P and Q is

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An Intiative by Sri Chaitanya

1 : 1

1 : 2

1 : 3

1 : 4

answer is D.

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