Question

N is between 1000 and 1200 every digit in n is odd and divisible by 3

Answer 1

Divisible means when number is divided by the divisor, the remainder is 0.

100 % 12= 4. so least 3 digit number divisible by 12 is 100 +(12–4)= 108

300 % 12= 0. So 300 is divisible by 12.

number of terms between 100 and 300 divisible by 12 is [(300–108)/12]= 17