Question

Primul care Răspunde corect ia coroana

Answer 1

1.
a)90
b)310
c)150

2.
a)90
b)310
c)6000

3.
a)x=6
b)x=5
c)x=28
d)x=8
e)x=707
f)x=13

4.
a)6x=18 =>x=3
b)2x=26 =>x=13
c)5x=30 =>x=6
d)4x=24 =>x=6
e)3x=3 =>x=1
f)6x=33 =>x=11/2

5.
x:19=c, rest c+3
x=19c+c+3
x=20c+3
83:19=4 rest 7 (A)
103:19=5 rest 8 (A)
123:19=6 rest 9 (A)
143:19=7 rest 10 (A)
163:19=8 rest 11 (A)
183:19=9 rest 12 (A)
203:19=10 rest 13 (A)
7 numere

6.
n
n+1
n+2
(n+n+1+n+2):15=14 rest 12
3n+3=15x14+12
3n+3=222
3n=219 =>n=73
Numerele sunt 73, 74 si 75.