Question

6. Test the divisibility of the following numbers by 7:
(i) 826
(ii) 117
(iv) 6021
(v) 14126(iii)2345(vi)25368
7. Test the divisibility of the following numbers by 8:
(i) 9364
(ii) 2138
(iv) 901674
(v) 136976
(iii) 2345
(vi) 25368
(iii) 36792
(vi) 1790184​

Answer 1

Answer:

826= last number double and substrate by other number .than divide by 7

eg. 826. 6×2=12. 82-12=70. so 826 not divisible by7.

divisible by 8=last 3number divisible by then ..

eg. 9364=4+6+3=13 then 9364 not divisible by 8.