MCQ
If $x = 2, y = 3$ then $\frac{1}{\text{x}^\text{y}}+\frac{1}{\text{y}^\text{x}}=.......$
- A$72$
- ✓$\frac{17}{72}$
- C$\frac{31}{108}$
- D$\text{None of these}$
$\frac{1}{2^3}+\frac{1}{3^2}$
$=\frac{1}{8}+\frac{1}{9}$
$=\frac{9+8}{72}$
$=\frac{17}{72}$
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Marks (class - interval)
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No. of students
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$30-40$
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$12$
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$40-50$
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$13$
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$50-60$
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$04$
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$60-70$
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$15$
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$70-80$
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$06$
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