Question
$\left(\frac{a}{b}-\frac{b}{a}\right)^{4}$નું વિસ્તરણ કરો.
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| ખોરાકની વસ્તુ | ચોખા | ઘઉં | ચા | ખાંડ | કઠોળ |
| ભાર | $7$ | $10$ | $5$ | $8$ | $2$ |
| ભાવનો ટકાવારી ફેરફાર | $134$ | $125$ | $115$ | $97$ | $120$ |
| થી વધુ | $25$ | $30$ | $35$ | $40$ | $45$ | $50$ | $55$ | $60$ | $65$ |
| સંચમી આવૃત્તિ | $100$ | $96$ | $87$ | $70$ | $45$ | $25$ | $14$ | $6$ | $1$ |