In a class of 30 students, 30 offer mathematics, 15 offer science and 13 offer English. The number of learners who offer all the three subjects is equal to the number of learners who do not offer any of these subjects.Ten learners offer both mathematics and English, 8 offer both mathematics and science and 3 offer only English and science. Determine (I) the number of learners who offer all the three subjects. (ii) the number of learners who offer only one subject. (iii)the number of learnerswho offer at least two ssubjects