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(mathematics) geometric sequence
Understanding geometric sequences is important for understanding mathematics.
He is good at solving problems related to geometric sequences.
what
What is your name?
let's see; what have we got here
Let's see, what is this?
Nothing
He said nothing.
which (of three or more) / which one /
Have you decided which movie to watch?
when
When will you go to Japan?
When are you going to Japan?
at any time
He will help at any time.
how old are you?
How old are you?
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