Question

using divisiblity tests determine which of the following numbers are divisiblity by 11.

a) 901135. b) 70169308
full solved answer in notebook please friends
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Answer 1

Answer:

Divisibility test of 11 suggests that the difference of the odd and even places of the number should be divisible by 11.

A is not divisible but B part is divisible by 11.

Divisibility test of 11 suggests that the difference of the odd and even places of the number should be divisible by 11.

Therefore

A) 901135-:

Odd places are 5, 1 and 0

Even places are 3, 1 and 9

5+1+0=6

3+1+9=13

13-6= 7 which is not divisible by 11, therefore 901135 is not divisible by 11

B) 70169308-:

Odd places are 8,3,6 and 0

Even places are 0,9,1 and 7

8+3+6+0=17

0+9+1+7=17

17-17=0

0 is divisible by 11 with 0 as quotient.

Therefore we can say that 70169308 is divisible by 11

Sorry couldn't arrange notebook but hope this helps