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A question paper consists of two sec...

A question paper consists of two sections having respectively 3 and 4 questions the following note is given on the paper " it is not necessary to attempt all the questions . One question from each section is compulsory " . In how many ways can a candidate select the questions ?

A

128

B

105

C

144

D

12

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
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  3. A question paper consists of two sections having respectively 3...

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  4. eight chairs are numbered 1 to 8 two women and three men wis...

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  5. There are four balls of different colours and four boxes of co...

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  6. There are 3 letters and 3 addressed envelopes coorresponding ...

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  7. The number of ways in which five different letters can be put ...

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  8. The number of ways that all the letters of the word SWORD can ...

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  9. There are 5 different coloured balls and 5 boxes of the same c...

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  10. The number of functions that can be defined from a set containing 20 e...

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  11. A set contains (12) elements . The number of subsets of the set ...

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  12. A Set contains 20 elements The number of subsets of the set wh...

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  13. A student is allowed to select atmost n books from a collection ...

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  14. A set contains (12) elements . The number of subsets of the set ...

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  15. How many mulitiples of 2 lie between 10 and 250?

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  16. If n objects are arranged in a row then the number of ways of s...

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  17. The position vector of a point p is r = x hati + y hatj + z ha...

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  18. Let a = hati + hatj + hatk and let r be a variable vector s...

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  19. The number of integers x,y,z, w such that x +y+z+w=20 and x , y,...

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  20. How many mulitiples of 3 lie between 10 and 250?

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