If event X cannot occur unless event Y occurs first then: a) Y is necessary for X b) X is necessary for Y c) X is both necessary and sufficient for Y d) X and Y are the same event O a) Y is necessary for X O c)X is both necessary and sufficient for Y O b) X is necessary for Y O d) X and Y are the same event

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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M5
If event X cannot occur unless event Y occurs first then:
a) Y is necessary for X
b) X is necessary for Y
c) X is both necessary and sufficient for Y
d) X and Y are the same event
O a) Y is necessary for X
O c)X is both necessary and sufficient for Y
O b) X is necessary for Y
O d) X and Y are the same event
Transcribed Image Text:If event X cannot occur unless event Y occurs first then: a) Y is necessary for X b) X is necessary for Y c) X is both necessary and sufficient for Y d) X and Y are the same event O a) Y is necessary for X O c)X is both necessary and sufficient for Y O b) X is necessary for Y O d) X and Y are the same event
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