if $$x=\sqrt {64}+\sqrt {121}-\sqrt {169}$$, the find the value of x²

Regional Conference on 'Improving Public Service Delivery - Role of Governments' was held in which city?

Where is ‘Sher Shah’s Tomb’ located?

Canals are the most irrigated in the state-

'बिनबोया' में कौनसा उपसर्ग है?

Arrange the following words in logical order -

1. Embryo 2. Child 3. Child 4. Adult 5. Youth

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to "No improvement".
The boys absented themselves for two days. 

In which city was the first metro rail service started in India?