Question

How many three digits numbers N=abc are there such that a≤b and c≤b ?

Details and assumptions
abc means 100a+10b+1c , as opposed to a×b×c . As an explicit example, for a=2,b=3,c=4 , abc =234 and not 2×3×4=24 .

Answer 1

hoping that someone will answer the question that I've been posted :-))

Answer 2

just go case by case ....
start with b=1 and see what a and c could be
a would have to be 1, c could be 0 or 1
that gives 2 possible numbers --> 110, 111

now do that for b=2 all the way to b=9 and count all the possible ways

Answer 3

i get an answer of 330 Numbers

Answer 4

thankyou dumbcow :-))

Answer 5

yw