Calculate the variance of 2, 3, 3, 4, 5, 5, 5, 7, 7 and 9

A circular pond of radius 4m has a path of width 2.5m round it. Find, correct to two decimal places, the area of the path. [Take\(\frac{22}{7}\)]

Fig. 1 and Fig. 2 are the addition and multiplication tables respectively in modulo 5. Use these tables to solve the equation (n \(\oplus 4\))

The diagram shows a circle centre O. if <STR = 29º and < RST = 46º, Calculate the value of <STO.

In the diagram, XY is a straight line. <POX = <POQ and <ROY = <QOR. Find the value of <POQ + <ROY.