Question

determine the least number which is divided by 9,11and 13 and leave remainder 1,2,and 3 respectively

Answer 1

1279 will be the answer.

Answer 2

9x11x13= 1287 is divisible by 9,11and 13

last number =7
9–7= 2,
11- 7 =4
13- 7 = 6.

1280 Giving reminders as 2,4,6 double of 1,2,3 So

1280/2 = 640 will give


71 x9 = 639
Remainder = 1

58 x 11 = 638
Remainder= 2

49 x 13 = 637
Remainder= 3