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Which of the following statements about machine learning are true? 1. Supervised learning requires labelled data. 2. Unsupervised learning identifies patterns without labels. 3. Reinforcement learning involves feedback through rewards or penalties. 4. Semi Supervised learning is used only for a large labelled data set.

पाटलिपुत्र में बुलाई गई प्रथम जैन संगीति के अध्यक्ष कौन थे?

An inlet pipe A originating from a river can fill a reservoir in 30 days. And an outlet pipe B, which is capable of emptying the completely filled reservoir in 50 days and drains out the water from the reservoir to an irrigation canal. The pipes are opened on alternate days starting with A. On which days from the beginning will the reservoir get completely filled for the first time?

दो लड़कों की आयु का अनुपात 5:6 है। दो वर्ष बाद, यह अनुपात 7:8 हो जाएगा। 10 वर्ष बाद उनकी आयु का अनुपात कितना होगा।