1 of 3 * 4 + 1 of 4 * 5 + 1 of 5 * 6. + 1 of 29 * 30 is equal to?

1 of 3 * 4 + 1 of 4 * 5 + 1 of 5 * 6. + 1 of 29 * 30 is equal to?

1 / 3 * 4 + 1 / 4 * 5 + 1 / 5 * 6 + 1 / 29 * 30
=1/3-1/4+1/4+1/5+...+1/29-1/30
=1/3-1/30
=3/10

What is 0 + 1 + 2-3-4 + 5 + 6-7-8 + 9 + 10-11-12 + 2008 + 2009

1 to 2008 were divided into four groups (two positive and two negative as a group), a total of 2008 / 4 = 502 groups, each group added up to - 4
0+(1+2-3-4)+(5+6-7-8)+(9+10-11-12)+.+(2005+2006-2007-2008)+2009
= 502x(-4) + 2009
=-2008+2009
=1

Five out of twelve is six out of six
What time

2.5
Your question (answer) is too brief. Please enrich the content and submit again

What is 5 + 8 + 9 + 10 + 11 + 12 + 13-20

It's 48