ABC26GN3037 · Ratio and Proportion

Subject: General Aptitude · Chapter: Ratio and Proportion · Exam: · Marks: · Difficulty:

The mean proportional between 234 and 104 is
(a)12
(b)39
(c)54
(d)None of these
Answer
Answer (as printed): D
Explanation
Required mean proportional $=\sqrt{234 \times 104}$ $$=\sqrt{13 \times 9 \times 2 \times 13 \times 8}=13 \times 3 \times 4=156 .$$

Explanation as extracted from the printed page; notation may be imperfect.

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