सात लगातार संख्याओं का औसत 95 है। सात लगातार संख्याओं की इस श्रृंखला में मध्य संख्या ज्ञात कीजिए।

The average price of 'n' liters of synthetic oil is Rs. 90 per liter. When 10 liters of synthetic oil with a price of Rs. 60 per liter is added to it, the average price of the mixture becomes Rs. 70 per liter. What is the value of 'n'?

In a zoo, there are horses and pigeons. If heads are counted, there are 340 heads, and if legs are counted, there are 1060 legs. How many pigeons are there?