Which of the following is not included in the current list ?

Magellan Strait is located between/at

Which of the following invented Algebra?

At what price should Shyam sell a pair of shoes which costs him Rs. 1200 so as to gain 72% after allowing a discount or 16%.

Which fraction comes next in the sequence :
1 3 5 7 ?
2 4 8 16 *