Great preeti from where you learn this technique. Is it your own observation.
@prafullyadav632011 жыл бұрын
very useful
@samklazar89959 жыл бұрын
average age of new boy? 38*2=76 is the ans example ;- average age of 20 boys is 25 .when one new boy added the average remains same what is the age of new boy? 20--------------25 i 1 i 21-------------25 age of new boy is 1*25=25
@bhaskarbhatia72599 жыл бұрын
last que ans is not right
@rohankadam90099 жыл бұрын
Hi
@MRDigitalEducation9 жыл бұрын
why you added 36..for 40...? what is average age of the boy means..?
@AkashPandey-wg1gd9 жыл бұрын
Question no. 3 is not right i think or may be i m not getting your point.. please clear it.!!!