Ajit lives on the 18^th floor of a building. He came down 9 floors and collected his Maths textbook from his friend Karan. Later, he went up along with Karan to Goutham's house which is 12 floors above Karan's for group work. If Goutham lives on the topmost floor of the building, how many floors does the building have?

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Solution

The correct option is A
21

Since Ajit came down 9 floors from 18^th floor to meet Karan,

Karan lives on the (18 - 9) = 9^th floor.

Goutham's house is 12 floors above Karan's house.

Goutham lives on (9 + 12)th floor
= 21^th floor.

Therefore, the building has 21 floors.

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Q. Directions: Study the following information carefully and answer the given questions.
A building has seven floors numbered one to seven, in such a way that the ground floor is numbered one, the floor above it, number two and so on such that the topmost floor is numbered seven. One out of seven people viz. A, B, C, D, E, F and G lives on each floor. A lives on the fourth floor. E lives on the floor immediately below F's floor. F does not live on the second or the seventh floor. C lives on the third floor. B does not live on a floor immediately above or below C's floor. D does not live on the topmost floor. G does not live on any floor below E's floor.
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The correct option is A 21 Since Ajit came down 9 floors from 18th floor to meet Karan, Karan lives on the (18 - 9) = 9th floor. Goutham's house is 12 floors above Karan's house. Goutham lives on (9 + 12)th floor = 21th floor. Therefore, the building has 21 floors.

The correct option is A
21

Since Ajit came down 9 floors from 18^th floor to meet Karan,

Karan lives on the (18 - 9) = 9^th floor.

Goutham's house is 12 floors above Karan's house.

Goutham lives on (9 + 12)th floor
= 21^th floor.

Therefore, the building has 21 floors.