Question

3.Using divisibility test , determine the following

numbers are divisible by 11.

a.72545 b.901153​

Answer 1

Answer:

 if the difference between the sum of the digits at the odd and even places equals 0 or divisible by 11, then the number is divisible by 11

1. 72545=

7+5+5=17

4×2=6

17-6=11

hence as this is divisible by 11. we can say that 72545 is divisible by 11.

Similarly you can do for 2.

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Answer 2

Answer:

Answer:a. 7+5+5-2+4

Answer:a. 7+5+5-2+4=17-6

Answer:a. 7+5+5-2+4=17-6=11

Answer:a. 7+5+5-2+4=17-6=11 Hence 72545 is divisible by 11

Answer:a. 7+5+5-2+4=17-6=11 Hence 72545 is divisible by 11b. 9+1+5-0+1+3

Answer:a. 7+5+5-2+4=17-6=11 Hence 72545 is divisible by 11b. 9+1+5-0+1+3= 15-4

Answer:a. 7+5+5-2+4=17-6=11 Hence 72545 is divisible by 11b. 9+1+5-0+1+3= 15-4= 11

Answer:a. 7+5+5-2+4=17-6=11 Hence 72545 is divisible by 11b. 9+1+5-0+1+3= 15-4= 11 Hence 901153 is divisible by 11