Ask good people to solve math problems in junior high schools in Hong Kong! ! ! - Training Enrollment Network

Ask good people to solve math problems in junior high schools in Hong Kong! ! !

Solution: Here are the first three items in each series.

1) When n = 1, n+5= 1+5=6.

When n=2, n+5=2+5=7.

When n=3, n+5=3+5=8.

2) When n = 1, 7+2n=7+2X 1=9.

When n=2, 7+2n=7+2X2= 1 1.

When n=3, 7+2n=7+2X3= 13.

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