Question

there are 300 students participating in the swachh bharat abhiyan. out of that 42/75 students first cleaned and 30/75 cleaned afterwards. then how many students did not cleaned under the abhiyan?

Answer 1

Students which haven't cleaned=300-(42/75×300)-(30/75×300)=300-168-120=300-288=12

12 students haven't cleaned...