Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Four persons independently solve a certain problem correctly with probabilities 
. Then the probability that the problem is solved correctly by at least one of them is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
P (problem solved by at least one) = 1 – P(problem is not solved by by all)
= 1 – 
= 1 – 
= 1 – 
= 
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