Question

Tolong jawab nomor 6 dari a sampai c tolong ya makasih

Answer 1

A)
2+4+6+8+10+...+100
= 100/2 × (2 + 100)
= 50 × 102
= 5040

b)
-1+2-3+4-5+6-7+8-...+100
= 100/2 × (-1 + 2)
= 50 × 1
= 50

c)
-100-99-98-...-2-1-0+1+2+3+...+97+98+99
= 100 × (-100 + 99)
= 100 × -1
= -100