Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 24)
24.
If the number 481 * 673 is completely divisible by 9, then the smallest whole number in place of * will be:
Answer: Option
Explanation:
Sum of digits = (4 + 8 + 1 + x + 6 + 7 + 3) = (29 + x), which must be divisible by 9.
x = 7.
Discussion:
16 comments Page 2 of 2.
Vikas mahant said:
1 decade ago
As you seen sum of digit is (29+x). So we have to feed the value of x which make digit divisible by 9.
29+x.
If we put x = 7.
Then 29+7 = 36.
Divisible by 9.
If we put 2 in place of 7.
Then (29+2) = 31.
Not divisible by 9.
29+x.
If we put x = 7.
Then 29+7 = 36.
Divisible by 9.
If we put 2 in place of 7.
Then (29+2) = 31.
Not divisible by 9.
Sanjeev varma said:
1 decade ago
Here the quest smallest hole no. which is divisible by 9.
A small technique,
If the sum of all no. equal to 9 then it is divisible by 9.
Ex:
15462.
1+5+4+6+2=18=> 1+8 =9 so it is divisible by 9.
Another case,
15460.
1+5+4+6+0=16=>1+6=7 if we add 2 to it then it will divisible by 9.
Same as to this question.
A small technique,
If the sum of all no. equal to 9 then it is divisible by 9.
Ex:
15462.
1+5+4+6+2=18=> 1+8 =9 so it is divisible by 9.
Another case,
15460.
1+5+4+6+0=16=>1+6=7 if we add 2 to it then it will divisible by 9.
Same as to this question.
Kranti said:
1 decade ago
Hello muskan. If he won't ask us to take smallest whole no. then we may also take x=15. Which is also correct one?
Sangeetha said:
1 decade ago
Here if we add 2 to 29 then it becomes 31 so it is not devisible by 9. And also same in the case of 5 and 6. Lastly we have 7 if it is added to 29 it becomes 36 so it is divisible by 9. So here 7 is the smallest whole number.
Sunny said:
1 decade ago
Small whole number is just given to confuse us...
and smallest whole number is not 1 it is 0 so accordin to the question we must substitute smallest possible whole number which satisfies the condition
and smallest whole number is not 1 it is 0 so accordin to the question we must substitute smallest possible whole number which satisfies the condition
Muskaan said:
1 decade ago
in dis question dey have asked for small whole number so accordingly it must be 1 as 29 plus 1 =30.but as 30 nt divided by 9so we cant take it. is writing smallest whole number in question is valid or not
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