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വിട്ടുപോയത് കണ്ടെത്തുക

20 : 420 :: 10 : 110 :: 15 : ?

A198

B180

C171

D240

Answer:

D. 240

Read Explanation:

20 × 21 = 420 10 × 11 = 110 15 × 16 = 240


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