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If x is a real number than x^2+x+1 is (a...

If `x` is a real number than `x^2+x+1` is (a) less than `3/4` (b) zero for at least one value of `x` (c) always negative (d) greater than or equal to `3/4`

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RS AGGARWAL-NUMBER SYSTEM-All Questions
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  2. If p is a positive fraction less than 1, then (a) 1/p is less than 1 ...

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  3. If x is a real number than x^2+x+1 is (a) less than 3/4 (b) zero for a...

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  4. Let n be a natural number such that 1/2+1/3+1/7+1/n is also a natural ...

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  5. If n is an integer, how many values of n will give an integral value o...

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  6. If p > q and r < 0 , then which is true? (a) p r\ <\ q r (b) p\ \ r\ <...

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  7. If X\ <\ Z\ a n d\ X\ <\ Y , which of the following is necessarily tru...

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  8. In the relation x > y+z ,\ x+y > p\ a n d\ z < p which of the followin...

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  9. If a and b positive integers and (a-b)/3.5=4/7, then (a) b > a (b) b ...

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  10. If 13=(13w)/(1-w), then (2w)^2=\ ? (a) 1/4 (b) 1/2\ (c) 1 (d) 2

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  11. The second digit of the number is 5              (b)   7        (c...

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  12. The last digit of the number is 0        (b)  1         (c)  2 ...

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  13. The largest digit in the number is 5            (b)   7           ...

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  14. Which of the following is a factor of the given number? 2          ...

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  15. The least prime number is 0              (b)   1           (c)   2...

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  16. Consider the following statements: (I) If x and y are composite number...

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  17. The number of prime numbers between 0 and 50 is 14          (b)...

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  18. The prime numbers dividing 143 and leaving a remainder of 3 in each ca...

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  19. The sum of the first four primes is (a) 10         (b) 11         (...

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  20. The sum of all the prime numbers from 1 to 20 is 75         (b)...

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