Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 106)
106.
If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x + y = ?
Answer: Option
Explanation:
80 = 2 x 5 x 8
Since 653xy is divisible by 2 and 5 both, so y = 0.
Now, 653x is divisible by 8, so 13x should be divisible by 8.
This happens when x = 6.
x + y = (6 + 0) = 6.
Discussion:
24 comments Page 3 of 3.
Sadhna said:
3 years ago
It should be only 6.
(3)
Alif Shaikh said:
3 years ago
I think Only 6 is the correct one.
(7)
Kawooya Alex said:
3 years ago
What is 13x here?
Please explain me in detail.
Please explain me in detail.
(8)
Rajendra singh said:
1 week ago
x = 6.
y =0.
Correct answer.
--> 653xy/80,
So 80 = 8*10, Y=0.
--> 653x/8.
653x is divisible by 8 if the last three digits are divisible by 8.
So;
if x = 2 so 6532/8 = 816.5
if x =6 so 6536/8 = 817, this is the correct answer.
y =0.
Correct answer.
--> 653xy/80,
So 80 = 8*10, Y=0.
--> 653x/8.
653x is divisible by 8 if the last three digits are divisible by 8.
So;
if x = 2 so 6532/8 = 816.5
if x =6 so 6536/8 = 817, this is the correct answer.
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