Aspire's Library
A Place for Latest Exam wise Questions, Videos, Previous Year Papers,
Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
An anti-aircraft gun fires a maximum of four shots.
Probabilities of hitting in the 1st, 2nd, 3rd, and 4th shot are
0.4, 0.3, 0.2 and 0.1 respectively.
Find the probability that the gun hits the plane.
Solution
Hit at least once = 1 − (miss all shots)Miss probabilities:
1st: $(1 - 0.4) = 0.6$
2nd: $(1 - 0.3) = 0.7$
3rd: $(1 - 0.2) = 0.8$
4th: $(1 - 0.1) = 0.9$
Miss all:
$0.6 \cdot 0.7 \cdot 0.8 \cdot 0.9 = 0.3024$
Hit at least once:
$1 - 0.3024 = 0.6976$
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
Ask Your Question or Put Your Review.
