Question

which of the following CANNOT be exprssed as the sum of three consecutive integers?
a)18
b)24
c)33
d)36

Answer 1

hm...

we can write the sum of three consecutive integers as

n + (n + 1) + (n+2) = 3n + 3 = (the sum)

we know that n must be an integer, so 3n + 3 must be divisible by 3

Answer 2

oh

Answer 3

n-1,n,n+1
n-1+n+n+1=3n
each term is divisible by 3

Answer 4

correction middle term is ,divide by 3

Answer 5

s the answer 18?

Answer 6

e.g.,24/3=8
middle term is 8
8-1,8,8+1or 7,8,9 are the required terms

Answer 7

sum is divisible by 3
for 18
18/3=6
6-1,6,6+1 or 5,6,7

Answer 8

each term means all your choices are divisible by 3

Answer 9

answer is 18?

Answer 10

5+6+7=18
there is no term .

Answer 11

To me all of them can be expressed as sum of 3 consecutive numbers.

Answer 12

you are absolutely correct.

Answer 13

3| 18 =6, hence middle one is 6, so the numbers is 5 , 6 ,7
3|24 = 8, hence middle one is 8 , the numbers is 7,8,9
same as others

Answer 14

i did all but there is no answer

Answer 15

Hmm,

there is no correct answer D: that's so weird

Answer 16

serious?

Answer 17

18 = 5 + 6 + 7
24 = 7 + 8 + 9
33 = 10 + 11 + 12
36 = 11 + 12 + 13

Are you sure you posted the `options` correctly? :o