how many 2 digit numbers are divisible by7
Answers
Answered by
3
Answer:
13
Step-by-step explanation:
7×2, 7×3, 7×4, 7×5, 7×6, 7×7, 7×8, 7×9, 7×10, 7×11, 7×12, 7×13, 7×14
Answered by
3
Answer:
14,21,28,35,...98 are in A.P
First term=a=14 and common difference=d=21−14=7
and the last term=t
n
=98
t
n
=a+(n−1)d
⇒98=14+(n−1)7
⇒98=14+7n−7
⇒7n=98−7
⇒7n=91
⇒n=
7
91
=13
There are 13 numbers divisible by 7.
Step-by-step explanation:
도움이 되길 바랍니다.....
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