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A problem in mathematics is given to 4 s...

A problem in mathematics is given to 4 students whose chances of solving individually are 1/2, 1/3, 1/4 and 1/5. Then probability that the problem will be solved at least by one student is

A

a) 2/3

B

b) 3/5

C

c) 4/5

D

d) 3/4

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