Refer to the following number series and answer the question that follows. (All numbers are single-digit numbers only.) (Left) 9 3 8 7 9 4 8 6 2 5 9 3 6 5 1 2 6 1 5 8 3 9 9 6 8 8 3 9 (Right) How many such perfect squares are there, each of which is immediately preceded by an odd number and also immediately followed by an even number? (NOTE: 1 is also considered a perfect square.)

If all digits within each number are arranged in descending order, which of the following results in the largest number? 965 425 257 354 284

This question is based on the five, three-digit numbers given below. (Left) 847 429 517 371 386 (Right) (Example: 697 - First digit = 6, second digit = 9 and third digit = 7) What will be the resultant if the second digit of the highest number is multiplied with the second digit of the lowest number?