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Find the A.P. whose nth term is 7 – 3K. ...

Find the A.P. whose nth term is 7 – 3K. Also find the 20th term.

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  2. Find the total number of two-digit numbers (having different digits), ...

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  3. Find the A.P. whose nth term is 7 – 3K. Also find the 20th term.

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  4. Given that (a, 2a) lies on the line y/2 = 3x – 6. Find the value of a.

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  5. Find the number of distinct rational numbers x such that oltxlt1 and x...

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  6. Three dice are rolled. Find the number of possible outcomes in which a...

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  7. In how many ways 14 identical toys be distributed among three boys so ...

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  8. Find the equation of the line passing through the point (1, 4) and int...

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  9. Find the number of non negative integral solutions of x1 + x2 + x3 + 4...

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  10. If the common difference of an A.P. is – 3 and the 18th term is – 5, t...

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  11. In how many different ways can 3 persons A, B, C having 6 one-rupee ...

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  12. If 6x + 5y – 7 = 0 and 2px + 5y + 1 = 0 are parallel lines, find the v...

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  13. In how many ways 3 boys and 15 girls can sits together in a row such ...

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  14. If the lines y = 3x + 7 and 2y + px = 3 perpendicular to each other, f...

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  15. If the 11 letters A, B, ..., K denote an arbitrary permutation of he ...

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  16. In how many ways can four people, each throwing a dice once, make a su...

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  17. If the straight lines kx – 5y + 4 = 0 and 4x – 2y + 5 = 0 are perpendi...

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  18. In how many ways can 5 girls and 3 boys be seated in a row so that no ...

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  19. If 9^(th) term of an A.P. is zero, prove that its 29^(th) term is doub...

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  20. In how many ways can four people, each throwing a dice once, make a su...

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