Problem: find the smallest number of 6 digits exactly divisible by 25 , 3545 and 15 .
Rationale: smallest number of six digits is 100000 . required number must be divisible by l . c . m . of 25,35 , 45,15 i . e 1575 , on dividing 100000 by 1575 , we get 800 as remainder . therefore , required number = 100000 + ( 1575 â € “ 800 ) = 100775 . answer is b .
annotated_formula: multiply(power(const_100, const_2), const_10)