What should come in place of the question mark (?) in the following number series ?
Multiples of 5 are alternatively added and subtracted
104 $$+ 5 \times 1$$ = 109
109 $$- 5 \times 2$$ = 99
99 $$+ 5 \times 3$$ = 114
114 $$- 5 \times 4$$ = 94
94 $$+ 5 \times 5$$ = 119
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