how many three digits natural number can be divisible by 7
Answers
Answer:
1 2 8
Step-by-step explanation:
What would you like to ask?
8th
Maths
Playing with numbers inactive
Tests for Divisibility
How many three - digit natu...
MATHS
How many three-digit natural numbers are divisible by 7?
MEDIUM
Share
Study later
VIDEO EXPLANATION
ANSWER
The first three digit number which is divisible by 7 is 105 and last three digit number which is divisible by 7 is 994.
This is an A.P. in which a=105,d=7 and l=994.
Let the number of terms be n.
Then t
n=994.
n th term of t n
=a+(n−1)d
∴994=105+(n−1)7
⇒994−105=7(n−1)
⇒n−1= 7
889
⇒n=127+1
⇒n=128
∴ n=128.
∴ There are 128 three digit numbers which are divisible by 7.
please mark me as a brainliest
Step-by-step explanation:
the the total number of 3 digits number can be divisible by 7 are from 105 tu 994 so therefore 994-105=889
889/7=127. (ans)