#### Answer

a). The answer is (1).
A neutron is udd, so the anti-neutron is (1).
b). $q(n bar) = (\frac{-2e}{3}+\frac{e}{3}+\frac{e}{3})=0$ Hence proved that the charge is correct.

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Published by
Pearson

ISBN 10:
0-32160-183-1

ISBN 13:
978-0-32160-183-4

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