Question

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Answer 1

Answer:

(1): 1,4,7

(2): 3

Step-by-step explanation:

35a6 is divisible by 3, it means the sum of digits of a number is divisible by 3 then the whole number also divisible by 3

3+5+a+6=14+a

let a=1:14+1=15 is divisible by 3

let a=2: 14+2=16 is not divisible by 3

let a=3: 14+3=17 Is not divisible

let a=4: 14+4=18 is divisible by 3

let a=5: 14+5=19 is not divisible

let a=6: 14+6=20 is not divisible

let a=7: 14+7=21 Is divisible

let a=8: 14+8=22 is not divisible

let a=9: 14+9=23 is not divisible

so a=1,4,7

(2) 67y19 is multiple of 9

6+7+y+1+9=24+y

let y=3 24+3=27

27 is multiple of 9

so the possible value is 3