Question
Pointing to a boy, a man said, “He is the son of the
only daughter of my mother.” How is the boy related to the man?Solution
Given: Pointing to a boy, a man said, “He is the son of the only daughter of my mother.” 
From the given information blood relation diagram will be. 
So, the boy is nephew of the man. Thus, correct option is (b).
Now a chord of a circle is such that AB = 10 cm. If the diameter of the circle is 20 cm, then the angle subtended by the chord at the center is.
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