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Find two consecutive multiples of 3 wh...

Find two consecutive multiples of 3 whose product is 648.

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The correct Answer is:
24 and 27
`(3x){3(x+1)}=648impliesx(x+1)=72impliesx^(2)+9x-8x-72=0.`
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RS AGGARWAL-QUADRATIC EQUATIONS -Exercise 4E
  1. The product of two consecutive positive integers is 306. Form the q...

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  2. Two numbers differ by 3 and their product is 504. Find the number.

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  3. Find two consecutive multiples of 3 whose product is 648.

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  4. The product of two consecutive odd numbers in 483. Find the numbers.

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  5. Find two consecutive positive even integers whose product is 288.

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  6. The sum of two natural numbers is 9 and the sum of their reciprocals i...

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  7. The sum of two numbers a and b is 15, and the sum of reciprocal of num...

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  8. The difference of two natural numbers is 3 and the difference of th...

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  9. The difference of two natural numbers is 5 and the difference of their...

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  10. The sum of the squares of two consecutive multiples of 7 is 1225. Find...

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  11. The sum of a natural number and its reciprocal is (65)/(8). Find the n...

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  12. Divide 57 into two parts whose product is 680.

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  13. Divide 27 into two parts such that the sum of their reciprocals is 3/2...

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  14. Divide 16 into two parts such that twice the square of the larger p...

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  15. Find two natural numbers, the sum of whose squares is 25 times their s...

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  16. The difference of the squares of two numbers is 45. The square of the ...

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  17. Three consecutive positive integers are such that the sum of the squar...

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  18. lf two digit number is four times the sum of its digits and twice the ...

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  19. A two digit number is such that the product of the digits is 14. Wh...

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  20. The denominator of a positive fraction is one more than twice the nume...

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