Take the average of the marks you obtained, and then multiply with 100 and divide it by 90. You'll get the percentage.

Entrepreneurship is the concept of running a business never has been in the market, a new kind of product/ service/ idea/ etc. Being new in the market makes it riskier hence the business ower is called entrepreneur.

Any place she's very much comfortable going, where she could enjoy a lot and simultaneously feel it being worth going out with you. Depends, some nice restaurant, beautiful sight seeing, leisure.

Atom is the elementary partical of matter, whereas molecule consists 2 or more atoms.