Question

divisibility dy 11 a 329571836​

Answer 1

Step-by-step explanation:

see the given above mentioned

Answer 2

Answer:

Take the alternating sum of the digits in the number, read left to right.If that is divisible by 11, so is the original number.

so, for instance 2728 has alternating sum of digital 2-7+2-8=-11. since-11 is divisible by 11, is 2728.

similar , for 31415, the alternating sum of digital is 3-1+4-1+5=10. this is not divisible by 11 ,so neither is 31415