There are 1000 students in a school and among them 10 % of them attends chess class. 10% of the students who are in the chess class are also enrolled for swimming. No other students are interested in swimming so how many will attend the swimming class if all enrolled attends? Select the correct option:	A) 1	B) 10	C) 100	D) 50	E) 20

Rationale: "10 % of 1000 gives 100 . so 100 attends chess and 10 % of 100 gives 10 . so 10 enrolled for swimming answer : b"
Answer: B