Question

Find the number of integers between 55 and 5555 and which are divisible by 7.?

None of the above
786
678p
876​

Answer 1

none of the above

79367

Answer 2

back calculation=5555/7=793.6

so ...7×793=5551

lower number is=56

upper number is=5551

the series is......

56,63,70,........,5551

now let 5551 is the nth term ....so...

$= > 5551 = 56 + (n - 1)7 \\ = > 5551 - 56 + 7 = 7n \\ = > n = \frac{5502}{7} \\ = > n = 786$

show the number of integers between 55 and 5555 which are divisible by 7 is 786