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A number of two digit s whose product...

A number of two digit s whose product is 30 . If the digits are interchanged the resulting number will exceed the previous by 9. the number is

A

56

B

54

C

38

D

28

Text Solution

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-QUADRATIC EXPRESSIONS-EXERCISE 1A (QUADRATIC EQUATIONS)
  1. The number of solution of the equation 9x^2-18|x|+5=0 belonging...

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  2. The number of solutions of the equation 5^x + 5^(-x)= log (10) 25...

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  3. IF the equation ax+by=1, cx ^2 +dy^2 =1 have only one solution ...

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  4. If a+b+c=0 then the quadratic equation 3ax^2+2bx+c=0 has at least one ...

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  5. If 2a+3b+6c =0 then the equation ax ^2 + bx +c=0 has atlest one ...

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  6. Let P(x) be a polynomial with integral coefficients . If there ...

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  7. IF 0< a<b<c<d , then the quadratic j equation ax ^2 +[1-a(b+c)x+ab...

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  8. alpha and beta are the roots of the equation x^2 +px +p^3 =0...

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  9. Find all number which exceed their square root by 12

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  10. The two consecutive positive odd integers such that the sum o...

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  11. Find two consecutive positive even integers, the sum of whose squares ...

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  12. The number having two digits such that it is 4 times the sum...

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  13. A number of two digit s whose product is 30 . If the digits are ...

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  14. The sum of the ages of a father and a son is 45 years . Fi...

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  15. The cost of a piece of cable wire is Rs. 35/-, If the length of the pi...

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  16. One fourth of a herd of goats was seen in the forest. Twice the square...

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  17. In the interior of a forest there are some apes . Of their tot...

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  18. In a cricket match Anil took one wicket less than twice the number of ...

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  19. Some points on a plane are marked and they are connected pair w...

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  20. The sides of a right angled triangle containing the right angle...

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