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प्रश्न
Evaluate: 54 × 53 ÷ 55
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उत्तर
54 × 53 ÷ 55
Recall the laws of exponents:
am × an = am + n, and `a^m/a^n = a^(m-n)`
54 × 53 = 54 + 3 = 57
`57/55 = 57-5=52`
52
= 25
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