How many numbers from 50 to 500 divisible by 9
Answers
Answered by
0
Answer:
n=50
Step-by-step explanation:
AP.
54,63..........495
495=54+(n-1)9
n=50
Answered by
0
Answer:
total numbers are 55
Step-by-step explanation:
You know if you list them it will start out with 9, 18, 27, 36, …
You might recall that a number is divisible by 9 exactly if the sum of its digits is also divisible by 9. There is one such number in the four-hundred-nineties, namely 495.
So the question amounts to wondering how many numbers are in the list
9, 18, 27, 36, … , 495
If you divide each of these numbers by 9, you’ll get a new list:
1, 2, 3, 4, … , 55
This last list has the same number of members!
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