Test Index

UPSC NDA II 2010 Mathematics Paper

Directions (Q.No. 7-10): The frequency distribution of life of 90 TV tubes whose median life is 17 months is as follows:

Life of TV tubes (in months)	No. of TV tubes
0−5 5−10 10−15 15−20 20−25 25−30	3 12 x 35 y 4

Question : 9

Total: 120

What is the cumulative frequency of the modal class?

Go to Question:

Prev Question

Next Question