Oxygen content below __________ percent in air contaminated with nitrogen does not support combustion and is unsafe for humane exposure.

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Question: Oxygen content below __________ percent in air contaminated with nitrogen does not support combustion and is unsafe for humane exposure.
[A].

18

[B].

16

[C].

14

[D].

12

Answer: Option B

Explanation:

No answer description available for this question.

A bird shooter was askgd how many birds he had in the bag. He replied that there were all sparrows but six, all pigeons but six, and all ducks but six. How many birds he had in the bag in all?

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Question: A bird shooter was askgd how many birds he had in the bag. He replied that there were all sparrows but six, all pigeons but six, and all ducks but six. How many birds he had in the bag in all?
[A].

9

[B].

18

[C].

27

[D].

36

Answer: Option A

Explanation:

There were all sparrows but six’ means that six birds were not sparrows but only pigeons and ducks.

Similarly, number of sparrows + number of ducks = 6 and number of sparrows + number of pigeons = 6.

This is possible when there are 3 sparrows, 3 pigeons and 3 ducks i.e. 9 birds in all.