Lentils names in English

The Latin language name on an element is natrium. The English name of this element is :

75% of 20 students are not good at English. How many are good in English ?

In a survey of 100 students, the number of students studying the various languages were found to be: English only 18, English but not Hindi 23, English and Sanskrit 8, English 26, Sanskrit 48, Sanskrit and Hindi 8, no language 24. Find: How many students were studying English and Hindi?

The botanical name of lentil is

Syllabus|English Pedagogy, English Comprehension|English Grammar|Pedagogy|Language|Summary

The collection of vowels in English alphabets. This set contains five elements.Namely,a,e,i,o,u