Question

Xsara throws a ball three times at a target. Each time she throws the ball,the probability that she hits the target by 0.2

Answer 1

Answer:

An observer can see through a pinhole. The top end of a thin rod of height h placed as shown in the figure,

The beaker height is 3h and its radius h. When the beaker is filled with a liquid up to a height 2h, he can see

the lower end of the rod. The ref: index of the liquid is

1)5/2

2)(5/2)1/2

3)3/2

4)7/3

ما آدم

زرا

2)

ازرا آن

-3)

4)