MBA Exam

Devilal lives in Sham Sharvan colony where each house has a number. If Devilal's house number is a multiple of 3, then it is a number from 50 through 59. If his house number is not a multiple of 4, then it is a number from 60 through 69. If his house number is not multiple of 6, then it is a number from 70 through 79. What is his house number?
Good One !!

1) 72
2) 57
3) 76
4) 54

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MBA Other Question

Raju and Radhika are playing a game which involves picking up coins kept on a table. Each person in his/her turn has to pick a minimum of 1 and a maximum of 7 coins, until all the coins are picked up by the players. Assume that both players are playing intelligently with the intention of winning the game. assume that the player who picks the last coin win the gameIf there are 42 coins on the table and it is Raju's turn to play, then how many coins should he pick up to ensure his win?

1) 5
2) 4
3) 2
4) 1
Find all positive integers a and b such that a^b = b^a

1) 0
2) 1
3) 2
4) 3
5) more than 3