Abi, Ben and Carl each drop a number of identical drawing pins, and count how many land with the pin upwards.
The table shows some of their results.
Number landing
'pin up
Number of pins
dropped
10
30
100
Abi
Ben
4
9
Carl
35
Two pins are dropped.
Estimate the probability that both pins land 'pin up.
Input note:give your answer as a decimal

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?