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(4) 50 ohms (5) 11.76 ohms

Explanation:

In the parallel combination, the equivalent resistance is given by :

4. When three 150 ohms resistors are connected in parallel, the equivalent is given by :

5. Three resistors of 20 ohms, 40 ohms and 100 ohms are connected in parallel, So,

Hence, this is the required solution.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

true is the correct answer

hope i