1

他

tā

(third-person singular) (since the early 20th century, usu. male) he; him; his (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)

=2

有

yǒu

to have; there is (bound form) having; with; -ful; -ed; -al (as in 有意 yǒuyì intentional)

=2

有

yòu

(obsolete on its own in Standard Chinese) alternative form of 又 (yòu, “again”) (obsolete on its own in Standard Chinese) alternative form of 又 (yòu, “and; with a remainder of (when dividing an integer by ten)”) alternative form of 又 (yòu, “again”) alternative form of 又 (yòu, “and; with a remainder of (when dividing an integer by ten)”)

=3

一个

yīge

a; an; one the whole (afternoon, summer vacation etc)

=3

一个

yīgè

Combination of the numeral 一 (“one”) and the generic classifier 個／个: a; an; one same

4

数学

shùxué

mathematics

5

硕士学位

shuòshìxuéwèi

master's degree