If you spend $9.74 in how many ways can you receive change for a ten-dollar bill

The difference will be 10.00-9.74=0.26.

That is 26 cents.

There are coins: 1,5,10 and 25 cents.

We list all the possible options.

1+25=26

1+10+10+5=26

1+10+5+5+5=26

1+5+5+5+5+5=26

And variant with more penny:

26 times by penny

11 times by penny + 10+5=2611 times by penny + 5+5+5=2621 times by penny + 5=2616 times by penny + 10=2616 times by penny + 5+5=266 times by penny + 5+5+5+5=266 times by penny + 5+5+10=266 times by penny + 10+10=26

So it's 13 of variants