Question

Hoo many numbers are
there between 1 and 1000
which when divided by 7 leave remainder 4 ?​

Answer 1

Step-by-step explanation:

Number will be in form 7n+4

for first number n=0 so number=4

now 99=13*7+4=95

Thus 4 is first number and last is 95

and the numbers are having difference of 7

Thus number of these no=(95–4)/7+1

=91/7+1=14

Answer 2

Answer:

let n numbers

it will create an ap: 11,18,25,..........., 998

an=a+(n-1)xd

998=11+(n-1)x7

998-11=7n-7

987+7=7n

994/7=n

n=142

142 numbers will be there

Step-by-step explanation: