Question

using divisibility tests, determine
which of the following numbers are
divisible by 2,3 sand 9:
126 ,672 ,990 2050
​

Answer 1

Ans126 is divisible by both 2 and 3

Answer 2

Answer:

2 - If the last digit is 0,2,4,6,8, then it is divisible by 2

so here, 126, 672, 990 and 2050 all are divisible by 2

3 - is the sum of digits is divisible by 3

so here 1+2+6 = 9/3=3

6+7+2 = 15/3=5

990=9+9+0=18/3=6

2050=2+5=7 which is not divisible by 3.

so 126, 672 and 990 are divisible by 3.

9 - is the sum of digits is divisible by 9

126=1+2+6=9/9=1

672=6+7+2=15

990=9+9+0=18/9=2

2050=2+5=7

so 126 and 990 are divisible by 9.

Mark me brainliest :)