Fill in the sequence: 99 92 86 ? 77

Question

What is the next number in the sequence -
1, 7, 10, 13, 19, 23, 28, 31, 32, 44, 49, 68, 70, 79, 82, 86, 91, 94, 97, 100, 103, 109, 129, 130, ?

Answer 1

Fill in the sequence: 99 92 86 ? 77

• 99-7 = 92
• 92-6 = 86
• 86-5 = 81
• 81-4= 77

So Ans is 81

Answer 2

81

-7 ,-6 ,-5, -4