Class 11 Mein Konsi Stream Le?

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Class 11 Challenges and Distractions

Revision of Class 11 Electronic Effects and Stability of Intermediates

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Sound Or Light Mein Kaun Hain Sabse Tez?

Class 11 Complete Study Plan

In one hour,a boat goes 11 km along the stream and 5 km against the stream. Then speed of the boat in still water (in km/hr) is :