Which number will come in the place of question mark ? 9:80: : 100 :? (A) 901 (B) 1009 (C) 9889 (D) 9999
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Answer:
(D) 9999
Step-by-step explanation:
9×9=81
81-1=80
similarly,
100×100=10000
10000-1=9999
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