Solution:
We know that,
P(do not have the same birthday) \[+\]P(have same birthday) \[=\text{ }1\]
\[0.897\text{ }+\] P(have same birthday) \[=\text{ }1\]
Thus,
P(have same birthday) \[=\text{ }1\text{ }\text{ }0.897\]
P(have same birthday) \[=\text{ }0.103\]