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If `a\ a n d\ b` are positive integers, `a\ >\ b` and `(a+b)^2-(a-b)^2> 29 ,` then the smallest value of `a` is 3 (b) 4 (c) 6 (d) 7

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RS AGGARWAL-NUMBER SYSTEM-All Questions
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  2. If a and b be positive integers such that a^2-b^2=19 , then the value ...

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  3. If a\ a n d\ b are positive integers, a\ >\ b and (a+b)^2-(a-b)^2> 29 ...

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  5. If (64)^2-(36)^2=20xxx\ t h e n\ x=? 70 (b) 120 (c) 180 (d) 140...

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  6. ((489+375)^2-\ (489-375)^2=?)/((489xx375)) 144 (b) 864 (c) 2 (d...

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  8. (768×768×768+232×232×232)/(786×768−768×232+232×232) =? (a) 1000       ...

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  9. (854×854×854−276×276×276)/(854×854+854×276+276×276)=? (a) 1130        ...

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  10. (753×753+247×247−753×247)/(753×753×753+247×247×247)=? (a) 1/1000 (b) 1...

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  11. (256×256−144×144)/112 is equal to (a) 420        (b)  400     (c)  ...

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  14. If a=7,\ b=5,\ c=3, then the value of a^2+b^2+c^2-a b-b c-c a\ i s -1...

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  15. Both addition and multiplication of numbers are operations which ar...

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  16. Which of the following digits will replace the H marks in the follo...

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  17. Find the missing number in the following addition problem: Figure 0...

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  18. What number should replace M in this multiplication problem? Figure 0 ...

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  19. If p\ a n d\ q represent digits, what is the maximum possible value...

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  20. What would be the maximum value of Q is the following equation? 5P7+8Q...

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