Question

which number is divisible by 2,3,4, and 6.
A. 124.
B.3.072.
C.1,005.
D.786.

Answer 1

get a calculator and divide them by the answers, which ever one equals a decimal is the wrong answer

Answer 2

its pretty easy when you think about it

Answer 3

ok thanks

Answer 4

i did this before

Answer 5

welcome

Answer 6

12
From Mathematica:
FactorInteger[{2, 3, 4, 6}] -> {{{2, 1}}, {{3, 1}}, {{2, 2}}, {{2, 1}, {3, 1}}}

Answer 7

\[\frac{1}{12} \{124,3072,1005,786\}\to \left\{\frac{31}{3},256,\frac{335}{4},\frac{131}{2}\right\} \]

Answer 8

B.

Answer 9

there are a number of simple divisiblity rules you can use

divisible by 2 its an even number, so that rules out C

Answer 10

just try and divide each number by 12
3072 is the only one one

Answer 11

divisible by 3, the digits add to a multiple of 3

1 + 2 + 4 = 7

so that eliminates A

Answer 12

divisible by 4, the last 2 digits are a multiple of 4....

86/4 = 21.5

so that eliminates D

Answer 13

divisible by 6, its even and the digits add to a multiple of 3.

so 3 + 0 + 7 + 2 = 12

its even

the last 2 digits 72 = 4 x 18

so it meets all the conditions

Answer 14

just remember some simple divisibility rules...

ends in 5 or 0.... divisible by 5

ends in 0 divisible by 10