निम्नलिखित संख्या श्रृंखला में, एक संख्या लुप्त है। प्रतिरूप (पैटर्न) को समझकर लुप्त संख्या ज्ञात कीजिए: 2, 6, 12, 20, ?, 42, 56, 72, 90

Which of the following territories was annexed by Lord Dalhousie under the pretext of misgovernance, and not directly through the Doctrine of Lapse?

What was the primary stated reason for the Partition of Bengal in 1905 by Lord Curzon?