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ചതുരത്തിലെ വിട്ടുപോയ കളത്തിലെ സംഖ്യ ഏത് ?

4 2 12
3 1 8
5 2  ?

A10

B18

C16

D21

Answer:

D. 21

Read Explanation:

4² - 2² = 16 - 4 = 12 3² - 1² = 9 - 1 = 8 5² - 2² = 25 - 4 =21


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