24 64 15 m 11 15 If 'm' is the resultant of the first row, what is the resultant of the second row?

Rules
(i) (Odd number) x (Composite odd number)
(ii) (Even number) + (Odd number)
(iii) (Even number) → (Perfect square number), then (Perfect square number) - (Even number)
(iv) (Odd number) ÷ (Prime odd number)
(v) (Odd number) - (Even number)
Solution
1st Row 24   64   15 ⇒ 64 - 24 = 40       [rule (iii)]
⇒     40 + 15 = 55     [rule (ii)]
          = m
2nd Row m   11   15 ⇒ 55   11   15
⇒         55 ÷ 11 = 5   [rule (iv)]
⇒       5 x 15 = 75     [rule (i)]
∴ Resultant of second row = 75