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प्रश्न
Evaluate:
70% of 70 + 90% of 90 – 120% of 120.
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उत्तर
70% of 70 + 90% of 90 – 120% of 120
= `(70xx70)/100+(90xx90)/100-(120xx120)/100`
= 49 + 81 − 144
= 130 − 144
= − 14
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