Who was Blaise Pascal?

A. English novelist
B. German physician
C. Chinese politician
D. French mathematician

Three flags each of different colours are available for a military exercise, Using these flags different codes can be generated by waving I. Single flag of different colours II. Any two flags in a different sequence of colours. III. three flags in a different sequence of colours. The maximum number of codes that can be generated is.

A. 6
B. 9
C. 15
D. 18

A man has some hens and cows. If the number of heads be 48 and the number of feet equals 140, then the number of hens will be_________?

A. 22
B. 23
C. 24
D. 26

Naeem sold a computer for Rs 25000 at which he suffered 20 Percent loss. Find the purchase price of the computer?

A. 31000
B. 41250
C. 31250
D. None of These