alleryकौन-सी वर्ग संख्या त्रिकोणीय संख्याओं 6 और 10 का योग है?
A18
B16
C14
D20
Answer & Solution
Correct answer: B. 16
दो क्रमागत त्रिकोणीय संख्याओं का योग एक वर्ग संख्या होती है, और 6 + 10 = 16, जो 4 का वर्ग है।
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