9
Q:
A) 17 | B) 19 |
C) 15 | D) 21 |
Answer: B) 19
Explanation:
Explanation:
Second, fourth and the sixth digits of the number are 3, 1 and 6. Using these digits only once we can make 361, which is a perfect square number. Hence, our answer is 19 x 19 = 361