Expression "Try your hand at"

[Documat]

Test No. incompl/inter-1 "Applying for that Job", question 9

Have you ever tried your ......... at running a business?

(a) arm
(b) finger
(c) hand
(d) leg

Test No. incompl/inter-1 "Applying for that Job", answer 9

Have you ever tried your hand at running a business?

Correct answer: (c) hand
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I don't understand the question: Expression "Try your hand at"?

Documat

[Torsten]

If you try your hand at something, want to see how well you can do in an activity, instead of just watching others.

So, if you try your hand at running a business, you make an attempt to found and manage a company yourself after you have watched other people running their businesses.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary