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In a test paper there are 10 questions ....

In a test paper there are 10 questions . Number of ways in which 6 questions to be answered is

A

105

B

210

C

310

D

220

Text Solution

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The correct Answer is:
B
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In an examination there are three multiple choice questions and each question has 4 choices. Number of ways in which a student can find to get all answers correct is :

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  20. Number of ways in which the letters of the word SUCCESSFUL be arranged...

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