Problem Statement:
Find the sum of the numbers which are multiples of 8 but not multiples of 6, between 100 and 3100.
My Approach:
I started by writing out the sequence:
[MATH]8, 16, 32, 40, 56, 64, 80, 88, 104, 112, 128, 136[/MATH]
I notice the pattern is [MATH]= 8*1, 8*2, 8*4, 8*5, 8*7, 8*8, 8*10, 8*11, 8*13, 8*14, 8*16 ....[/MATH]
But I can't seem to be able to find a formula for the general term.
Find the sum of the numbers which are multiples of 8 but not multiples of 6, between 100 and 3100.
My Approach:
I started by writing out the sequence:
[MATH]8, 16, 32, 40, 56, 64, 80, 88, 104, 112, 128, 136[/MATH]
I notice the pattern is [MATH]= 8*1, 8*2, 8*4, 8*5, 8*7, 8*8, 8*10, 8*11, 8*13, 8*14, 8*16 ....[/MATH]
But I can't seem to be able to find a formula for the general term.