A is B's sister, C is B's mother, D is C;s father, E is D's mother. Then how is A related to D?
grandfather
daughter
granddaughter
none
There are 108 books placed on three different shelves of the library. There are twice as many books in the History and English shelves combined as there are on the Physics shelf and twice as many on the Physics shelf as there are in the English Shelf. How many books are there on the History shelf?
18
36
45
none
In a group of 26 students, 21 like football and 14 like cricket. What is the number of students who like both football and cricket?