Simple probability trees

Jim and Sue each take a driving test.

The probability that Jim will pass the driving test is 0.7

What is the probability he fails the test?

Jim and Sue each take a driving test.

The probability that Sue will pass the driving test is 0.6

What is the probability he fails the test?

Jim and Sue each take a driving test.

What is the probability that both Jim and Sue pass the test?

Jim and Sue each take a driving test.

What is the probability that only one of them will pass the test?

Terri has 7 pens in a box.

2 of the pens are blue, 5 of the pens are red.

Terri takes a random a pen from the box.

What is the probability that she picks a blue pen?

(Give answer as a fraction)

Terri has 7 pens in a box.

2 of the pens are blue, 5 of the pens are red.

Terri takes a random a pen from the box.

What is the probability that she picks a red pen?

(Give answer as a fraction)

Terri has 7 pens in a box.

2 of the pens are blue, 5 of the pens are red.

Terri takes a random a pen from the box and puts it back in the box.

What is the probability that she picks a blue pen the second time ?

(Give answer as a fraction)

Terri has 7 pens in a box.

2 of the pens are blue, 5 of the pens are red.

Terri takes a random a pen from the box and puts it back in the box.

What is the probability that she picks a red pen the second time ?

(Give answer as a fraction)

Find the probability that Terri takes one pen of each colour from the box?

(Give answer as a fraction)

Tim puts 3 red counters and 4 blue counters in a bag.

He takes at random a counter from the bag.

What is the probability that he picks a blue counter?

(Give answer as a fraction)