राउछन् । यदि 50 जनाले दुवै मन 1.
र एक तिहाईले पिरा
पराउँदैनन् भने जम्मा युवतिहरूको सङ्ख्या भेनचित्रको सहायताबाट
In a surrvey, one-fourth young girl like sour-taste only
and one third-like chilly-test. If 50 of them do not like
both the tastes, find the total number of young girls with
the help of a Venn-diagram.
Ans:120​