There are 50 students admitted to a nursery class. Some students can speak
only English and some can speak only Hindi. Ten students can speak both
English and Hindi. If the number of students who can speak English is 21, then
how many students can speak Hindi, how many can speak only Hindi and how
many can speak only English ?
In a town, 65% people watched the news on television, 40% read a newspaper
and 25% read a newspaper and watched the news on television also. What
percent of the people neither watched the news on television nor read a news-
paper ?
Ravi's brother is 3 years aertter to him. His father was 28 years of age when
his sister was born while Ms mother was 26 years of age when he was born. If
his sister was 4 years of age when his brother was born, what was the age of
Ravi's father and mother respectively when his brother was born ?
When Rahul was born, his father was 32 years older than his brother and his
mother was 25 years older than his sister. If Rahul's brother is 6 years older
than him and his mother is 3 years younger than his father, how old was Rahul's
sister when he was born ?
A father is now three times did as his son. Five years back, he was four
times as old as his son. The age of the son is