The heights of 50 students, measured to the nearest centimetres have been found to be as follows :
: What can you conclude about their heights from the table ?

The height of 50 students, measured to the nearest centimetres have been found to be as follows: Represent the data given above by a grouped frequency distribution table, taking the class intervals as 160-165, 165-170 etc.

Given that ABCD is a parallelogram and /_ B = 80° . What can you conclude about the other angles of the parallelorgam ?

Given that vec a* vec b=0 and vec a xx vec b= vec 0 . What can you conclude about the vectors vec a and vec b ? .

Given that veca cdot vecb = 0 and vecaxxvecb = vec0 . What can you conclude about the vectors veca and vecb ?