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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,344

1. Solve:

.

2. A two-digi number is such that the product of the digits is 18. If 27 is subtracted from the number, the digits are interchanged. Find the number.

3. If the roots of

are equal, prove that 2a = b + c.

4. If p and q are the roots of the equation

, form the equation whose roots are(i)

(iii) .

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