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8 : 511 : : 10 :

A911

B999

C811

D899

Answer:

B. 999

Read Explanation:

Pattern നോക്കാം:

(8511)(8 \rightarrow 511)

(8=23))(8 = 2^3))
(511=291=(23)31=831)(511 = 2^9 - 1 = (2^3)^3 - 1 = 8^3 - 1)

അതിനാൽ rule:
nn31n \rightarrow n^3 - 1

ഇപ്പോൾ (10) ന്:
1031=10001=99910^3 - 1 = 1000 - 1 = 999

ഉത്തരം: 999


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