From one footwear shop,12 pair of chappals were sold.The sizes of these chappals are given 7,8,6,7,7,5,9,6,7,8,7.find their mode.

Solve the following subquestion In a unit test 2 students out of 10 failed. The marks of the students who passeq were 9, 6,7, 8.8.9, 8,7. Find the median marks of 10 students.

In the school, 46 students of 9 th standard were told to measure the lengths of the pencils in their compass boxes in centimetres. The data collected was as follows:collected was as follows.16, 15, 7, 4.5, 8.5, 5.5, 5 ,6.5, 6, 10, 12, 13, 4.5, 4.916, 11, 9.2 7.3, 11.4, 12.7 13.916, 5.5, 9.9, 8.4, 11.4, 13.1, 15,4.8, 10, 7.5, 8.5, 6.5, 7.2, 4.5, 5.7, 16, 5.7 6.9, 8.9, 9.2, 10.2, 12.3, 13.7, 14.5, 10 By taking inclusive classes 0-5, 5-10, 10-15... prepare a grouped frequency distribution table

Compare the following pairs of ratios: 2.5/7,3/8

Find the values of a for which points (8,-7,a),(5,2,4) and (6,-1,2) are collinear.

Write any three rational numbers between 7.6 and 7.7 .