A clock completes a clockwise revolution of 360° in a day.

(a) 3 to 9

By looking at the clock we can see when the hour hand goes from 3 to 9 it complete half of the revolution which is 180°.

Fraction = .

As we know 180° is the half of the 360° so it covers .

(b) 4 to 7

By looking at the clock we can see when the hour hand goes from 4 to 7 it makes a right angle which is of 90°.

Fraction = .

(c) 7 to 10

By looking at the clock we can see when the hour hand goes from 7 to 10 it makes a right angle which is of 90°.

Fraction = .

(d) 12 to 9

By looking at the clock we can see when the hour hand goes from 12 to 9 it basically covers three right angles which is of = 90+90+90 = 120°.

Fraction =

(e) 1 to 10

By looking at the clock we can see when the hour hand goes from 1 to 10 it basically covers three right angles which is of 120°.

Fraction =

(f) 6 to 3

By looking at the clock we can see when the hour hand goes from 6 to 3 it basically covers three right angles which is of 120°.

Fraction =