Question

Aflați pe x știind ca: a) x:(1+2+3+...+100)=60600 b) ( 1+2+3+...+100):x=101

Answer 1

x:(1+2+3+...+100)=60600
x:[100•(100+1):2]=60600
x:[50•101]=60600
x=60600•5050
x=306030000

(1+2+3+...+100):x=101
(100•101:2):x=101
5050:x=101
x=50

Answer 2

a)X:(1+2+3+...+100)=60 600

1+2+3+...+100=100x101:2=10 100:2=5 050

X:5 050=60 600

X=306 030 000

b)(1+2+3+...+100):X=101

X=306 030 000:101

X=3 030 000