Question

Find the greatest number 4 digits which when divided by 7,10,15, 21and 28 leaves remainder 5,8,13,19and26 respectively

Answer 1

LEAVE REMAINDER IS 5,,8,13,19,26

7-5 => 2

10-8=> 2

15-13 => 2

21-19 => 2

26-28 => -2

SO, THE DIVISIOR = 2,-2

AND NOW DIVIDING 9998 IT IS COMPLETELY DIVISIBLE

SO, 9998 IS THE greatest number 4 digits which when divided by 7,10,15, 21and 28 leaves remainder 5,8,13,19and26 respectively

I HOPE ITS HELPFUL

THANK YOU