MBA Exam

Argentina and Brazil play a series of soccer matches until one team wins 5 matches. Assume no match ends in a draw. The number of ways the series can conclude is _______.

1) 158
2) 126
3) 192
4) 252

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MBA Other Question

Let (ab)^2 = xypq where x,a,b not equal to 0 , xy ,pq are perfect squares; then a+B=? & xy= ?

1) 5 & 16
2) 6 &36
3) 7 &64
4) 8 &81
Please explain your answers

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