How many numbers between 11 and 90 are divisible by 7? Choose the correct choice.
A) 7	B) 10	C) 11	D) 12	E) 13
The required numbers are 14,21,28,...........,84.   This is an A.P with a=14,d=7.   Let it contain n terms   then T =84=a+(n-1)d   =14+(n-1)7   =7+7n   7n=77 =&gt;n=11.   ANSWER 11 11
<result>C</result>
How many numbers between 11 and 90 are divisible by 7?