how many 2-digit numbers are reversed when you:
(a) add 1 and then divide by 2?
(b) subtract 2 and then divide by 2?
(c) subtract 10 and then divide by 2?
(d) divide by 2 and then multiply by 9?
Showing posts with label halving. Show all posts
Showing posts with label halving. Show all posts
Tuesday, 25 May 2010
reversals
how many 2-digit numbers are reversed when you:
(a) add 1 and then divide by 2?
(b) subtract 2 and then divide by 2?
(c) subtract 10 and then divide by 2?
(d) divide by 2 and then multiply by 9?
Subscribe to:
Posts (Atom)