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The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is

  • 15
  • 20
  • 25
  • 35
Similar Questions :

1. Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is

  • 12
  • 13
  • 15
  • 17

2. Product of two natural numbers is 17. Then, the sum of reciprocals of their squares is

  • \begin{aligned} \frac{290}{289} \end{aligned}
  • \begin{aligned} \frac{1}{289} \end{aligned}
  • \begin{aligned} \frac{290}{90} \end{aligned}
  • \begin{aligned} \frac{290}{19} \end{aligned}

3. find the number, If 50 is subtracted from two-third of number, the result is equal to sum of 40 and one-fourth of that number.

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  • 216
  • 114
  • 116

4. Two numbers differ by 5. If their product is 336, then sum of two number is

  • 33
  • 34
  • 36
  • 37

5. A number is doubled and 9 is added. If resultant is trebled, it becomes 75. What is that number

  • 8
  • 10
  • 12
  • 14
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