Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. To be at one's finger's ends

To be completely conversant with
To be hopeless
To count things
To be highly perplexed

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Idiom
For each of the following sentences four alternatives are given. You are required to choose the correct meaning of the idiom or phrase given or underlined in the sentence. I raked my brains to solve this difficult problem.

I used my common sense
I subjected my mind to hard thinking
I consulted several people
I brainwashed several experts
I read number of books

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