1
Question
Which of the following numbers are divisible by 9?
(i) 91
(ii) 306
(iii) 1526
(iv) 730143
(v) 568711
(vi) 862497
(vii) 966333
(viii) 1257777
(i) 91
(ii) 306
(iii) 1526
(iv) 730143
(v) 568711
(vi) 862497
(vii) 966333
(viii) 1257777
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Solution
A number is divisible by 9, only when the sum of its digits is divisible by 9.
S. No.
Number
Sum of the digits
Divisible?
(i)
91
10
No
(ii)
306
9
Yes
(iii)
1526
14
No
(iv)
730143
18
Yes
(v)
568711
28
No
(vi)
862497
36
Yes
(vii)
966333
30
No
(viii)
1257777
36
Yes
| S. No. | Number | Sum of the digits | Divisible? |
| (i) | 91 | 10 | No |
| (ii) | 306 | 9 | Yes |
| (iii) | 1526 | 14 | No |
| (iv) | 730143 | 18 | Yes |
| (v) | 568711 | 28 | No |
| (vi) | 862497 | 36 | Yes |
| (vii) | 966333 | 30 | No |
| (viii) | 1257777 | 36 | Yes |
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