'fewer' or 'less'?

~ Consolidation Test ~

a) You should drink coffee - it makes you too stressed.

b) £3.27? That's money I've ever had in my account before!

c) Be careful before you agree: hours means less pay!

d) If you listened more, and talked you might learn something!

e) We have to make mistakes next time if we want to be taken seriously.

f) In China couples are strongly encouraged to have children.

g) Taking exercise and eating fast food will make you healthier.

h) In the end popular item in the newsletter turned out to be her editorial - she wasn't happy!

i) There have always been girls than boys interested in engineering, but this is slowly changing.

j) While and university leavers are automatically finding jobs, as we enter a time of growth and opportunity, successful of all job hunters are, ironically, highly qualified.