DAY 32

Comment

One way to approach this is to write P as 14 x 602.
It is then a matter of finding the difference between 14 x 602 and 14 x 601.

Answer

14.

Readers' methods

Leonid, Bratislava:
P = 7 x 1204 and Q = 7 x 1202,
so P - Q = 7 x 2 = 14.

Carole S, Urmston M41:
P - Q = 28 x 301 - 14 x 601
= 14 x 2 x 301 - 14 x 601
= 14(602 - 601)
= 14.