Which of the following number is not divisible by 9?a)387459b)904806c)...
3 + 8 + 7 + 4 + 5 + 9 = 36
9 + 0 + 4 + 8 + 0 + 6 = 27
7 + 5 + 8 + 9 +3 + 4 = 36
8 + 7 + 9 + 1 + 3 + 4 = 32
∴ 32 is not divisible by 9.
∴ 879134 is not divisible 9.
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Which of the following number is not divisible by 9?a)387459b)904806c)...
A) 387459 = 3 8 7 4 5 9 = 3 8=11 ,11 8=19 ,19 7=26 ,26 4=30 ,35 4=39 b) 904806 = 9 0 4 8 0 6 = 9 4=13 , 13 8=21 , 21 6=27 c) 758934 = 7 5 8 9 3 4 = 7 5=12 , 12 8=20 , 20 9=29 , 29 3=32 , 32 4=36 Thus , 387459 is not divisible by 9
Which of the following number is not divisible by 9?a)387459b)904806c)...
Explanation:
To determine whether a number is divisible by 9, we need to check if the sum of its digits is divisible by 9. If the sum of the digits is divisible by 9, then the number itself is divisible by 9. Otherwise, it is not divisible by 9.
Let's apply this rule to each option:
a) 387459
- Sum of digits: 3 + 8 + 7 + 4 + 5 + 9 = 36
- Since 36 is divisible by 9, the number 387459 is divisible by 9.
b) 904806
- Sum of digits: 9 + 0 + 4 + 8 + 0 + 6 = 27
- Since 27 is divisible by 9, the number 904806 is divisible by 9.
c) 758934
- Sum of digits: 7 + 5 + 8 + 9 + 3 + 4 = 36
- Since 36 is divisible by 9, the number 758934 is divisible by 9.
d) 879134
- Sum of digits: 8 + 7 + 9 + 1 + 3 + 4 = 32
- Since 32 is not divisible by 9, the number 879134 is not divisible by 9.
Therefore, the correct answer is option 'D' (879134) as it is the only number that is not divisible by 9.