MBA Exam

For how many integres S is S/(20-S) square of a natural number??

1) 5
2) 4
3) 3
4) 2

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MBA Other Question

An advertising board has 8 display panels of uniform dimensions in a row. Advertisements of 5 different brands of perfumes are to be displayed on the board. In how many different ways can the advertisements of these 5 brands be displayed on the board so that each display panel has one advertisement displayed on it and each brand is displayed on at least one panel?(approach please)

1) 126,000
2) 5^8
3) 92400
4) 9080
A text book for children is meant to have 216 cm2 of actual printed matter in each page. Also, the top and bottom margins are 3 cm each and the left and right margins are 2 cm each. Find the most economical height and width of each page?

1) 20 cm and 14 cm
2) 16 cm and 12 cm
3) 24 cm and 16 cm
4) 18 cm and 12 cm