Question

1) check the divisibility conditions of 7,9 for the following numbers i) 666666 ii) 20691 2) check the divisibility conditions of 11 for the following numbers i) 123456789 ii) 777777 3) check the divisibility conditions of 8, 9, for the following numbers i) 234567 ii) 122120 4) check the divisibility conditions of 7,11 for the following numbers i) 342384 ii) 95018 5) check the divisibility conditions of 8,9,11 for the following numbers i) 194832 ii) 333333​

Answer 1

Step-by-step explanation:

solve the pair of equations

Answer 2

Step-by-step explanation:

divisibility by 11

(I) 123456789

sum of the digits at even places-8+6+4+2 =20

sum of the digits at odd places - 9+7+5+3+1=25

difference = 5

since the difference is not divisible by 11

hence, 123456789 is not divisible by 11

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