Mathematics
Related Questions
Given :
Marks obtained Number of students Less than 20 20 Less than 30 30 Less than 40 40 For the data, given above, the less than cumulative frequency for less than 40 is :
90
40
50
70
Govinda opened a R.D. account in a bank for 2 years 4 months. If the rate of interest is 8 % per year and the bank pays him ₹ 7,369.60 on maturity, find how much per month did Govinda deposit ?
Prove that :
tan A + cot A = sec A. cosec A.
A cylindrical vessel of diameter 14 cm and height 42 cm is fixed symmetrically inside a similar vessel of radius 8 cm and height 42 cm. The total space between the two vessels is filled with glass-wool for heat insulation. Find the volume of the glass-wool required.