3948 bricks are used to build a wall as shown in diagram 1.1 . the size of each wall is given in ratio as below:
wall 1: wall 2 : wall 3
x x +5 x
solve for x if i unit of ratio is equivalent to 282 bricks.
[3 marks]

A. the probability that a product is defective is 0.1. what is the probability that there will be 1 or less defective products out of the next 8 produced products b.the expected number of imperfections in the coating nylon for parachutes is 6 per 100 yards. what is the probability of finding 12 or fewer imperfections in 260 yards c.in a lot of 54 products there are 9 defective products. calculate the probability that not more than 1 is defective from a random sample of 17 products.