(99)3
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Yogita Ingle 3 years, 8 months ago
(99)3
We have 99 = 100 – 1
∴ 993 = (100 – 1)3
= 1003 – 13 – 3(100)(1)(100 – 1)
= 1000000 – 1 – 30000 + 300
= 100300 – 30001
= 970299
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