Question

Determine the no. nearest to 110000 but greatr than 100000 which is exactly divisible by each 8,15,21 ?

Answer 1

first of all we take lcm of 8,15,21 iske bad lcm 840 ayega or phir 840 se 100000 ko devide kange uske bad 40 remainder ayega phir a.t.q number 100000 is se bada hona chahiye so hm 40 m 800 or add kar denge or number ho jayega 100080