Question

17. which is the 4 digit number whose second digit is thrice the first digit and 3'rd digit is sum of 1’st and 2'nd and last digit is twice the second digit. 1. 2674     2. 1349   3. 3343   4. 3678

Answer 1

Answer:

2. 1349

1×3=3 THEN 1+3=4 AND THE LAST 3×3=9

IT MAKES 1349