How many children does Mr. Jagdish has?
I. Mr. Jagdish has six sons and each has one sister.
II. Number of sons of Mr. Jagdish is six times the number of his daughter (s).
From I: Number of sons = 6, Number of daughters = 1. Hence, total children = 7. From II: Suppose number of daughters = x; So, the number of sons = 6x, We have 2 possibilities for daughters 1 or 6. So, if number of daughter = 1, and number of sons is 6. Which is 6 times and if number of daughter = 6, and number of sons is 6. Which is not 6 times. So statement I is required.
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