Answer:
or around 0.0406
Step-by-step explanation:
We need to choose 2 seeds that will not grow - there's
7 * 6 / 2 = 21 possibilities (choose one, chose second one, divide by 2 because each choice was counted twice).
The probability of each of those possibilities happening is:
because two need to fail to grow and the rest need to grow properly.
The full probability is
Answer:
Time required by Machine B to create a widget = 4 hours
Step-by-step explanation:
Time taken by Machine A ( ) = 3 hours
Time taken by Machine B ( )= x hours
Time taken by both machines by working together = 12 hours
The time required to both machines by working together to finish a task is given by the formula =
Put the values in above formula we get
⇒ T =
⇒ 12 =
⇒ 36 + 12 x = 3 x
⇒ x = - 4 hours
This is the time required by Machine B to create a widget.