• 4, 2

  • 6, 2

  • 16, 4

  • 8, 6


In this question, There are groups of two numbers in which first one is equal to 4 x second one. 720 = 180x4 176 = 44x4 40 = 4x10 Next digits in this sequence will be 16, 4. Hence option C is correct.