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Write the set B = {X: X is a two digit n...

Write the set B = {X: X is a two digit numbers sych that the sum of its digits is 7}

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The correct Answer is:
`{16,25,34,43,52,61,70}`
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Describe the following sets in Roster form: {x : x is a two digit number such that the sum of digits is 8} .

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CBSE COMPLEMENTARY MATERIAL-SETS AND FUNCTIONS-LONG ANSWER TYPE QUESTIONS
  1. Write the set B = {X: X is a two digit numbers sych that the sum of it...

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  2. In a town of 10,000 families, it was found that 40% of the families bu...

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  3. In a town of 10,000 families, it was found that 40% of the families bu...

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  4. In a twon of 10,000 families it was found that 40% families buy newspa...

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  5. In a town of 10,000 families it was found that 40% family buy newspape...

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  6. In a town of 10,000 families it was found that 40% family buy newspape...

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  7. In a town of 10,000 families it was found that 40% family buy newspape...

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  8. In a town of 10,000 families, it was found that 40% of the families bu...

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  9. In a group of 84 persons, each plays at least one game out of three vi...

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  10. In a class, 18 students took Physics, 23 students took Chemistry and 2...

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  11. In a class, 18 students took Physics, 23 students took Chemistry and 2...

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  12. In a class, 18 students took Physics, 23 students took Chemistry and 2...

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  13. Using properties of sets and their complements prove that (i)(A cup ...

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  14. Using properties of sets and their complements prove that (ii) A-(A ...

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  15. For any 3 sets A, B and C, prove that : (i) A-(B cupC)=(A-B)cap(A-C)...

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  16. For any 3 sets A, B and C, prove that : (i) A-(B cupC)=(A-B)cap(A-C)...

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  17. Using properties of sets and their complements prove that (v) A cap (...

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  18. If A is the set of all divisors of the number 15. B is the set of prim...

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  19. Two finite sets have m and n elements. The total number of subsets of ...

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  20. If A={4^(n)-3n-1:n in N) and B={9(n-1):n in N} then

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  21. A survey shows that 63% of the people watch a news channal whereas ...

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