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ആദ്യത്തെ 20 ഒറ്റ സംഖ്യകളുടെ തുക എത്ര?

A6400

B900

C400

D200

Answer:

C. 400

Read Explanation:

ആദ്യത്തെ n ഒറ്റ സംഖ്യകളുടെ തുക =n2\text{ആദ്യത്തെ n ഒറ്റ സംഖ്യകളുടെ തുക }=n^2

n2=202n^2= 20^2

=400=400


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