A drawer contains 41 pairs of socks ; 13 grey , 5 black , 3 brown 18 white and 2 navy blue . Calculate the probabilities of :- a) A pair of black socks
b) 2 pairs of socks - one brown and one white
c) picking out 2 pairs of navy blue socks.​

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters