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The following frequency distribution table gives the ages of 200 patients treated in a hospital in a week. Find the mode of ages of the patients.

What are free oscillations? Give one example.

Correct the following statement giving reasons The mature insulin molicule consists of three short polypeptide chains

Lateral branches with short internodes giving rise to roots below and leaves above at nodes are observed in:

In the given table, Column I gives type of oscillation, Column II gives change in amplitude of oscillation and Column III gives examples of these types of oscillation. The combination that defines the features of free oscillation is

Give short answers : During HIV infection, it is the other diseases which kill the patient rather than the HIV infection. Can you justify this statement?