Campus Maths Puzzle Logical Reasoning Blood Relations

How is Sam's mother's husband's father-in-law's son's daughter related to Sam?
Option
(a) sister
(b) wife
(c) niece
(d) aunt
(e) None of these

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Campus Other Question

30% increases in price of eggs, 3 eggs are less avail for 7.80 so present rate of eggs per dozen? if 9cosx+12sinx=15
find the value of cotx