The answer depends on which number is missing.
The sequence could be:
96, 68, 56, 50, 40
68, 61, 56, 50, 40
68, 56, 522/3, 50, 40
68, 56, 50, 46, 40
68, 56, 50, 40, 16.
In fact, there are infinitely more possible answers. Given ANY fifth number to add to the four in the question, it is always possible to find a quartic (power 4) polynomial that will fit all five numbers.
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17. The numbers are being increased by odd numbers beginning with 3.
50% of 80 = 40 because 50% = 0.5 0.5 x 80 = 40 or you can divide 40 by 0.5 40/0.5 = 80
To 'back-calculate' a percentage such as this, you divide the number by the decimal equivalent of the percentage. * 40% = 0.4 So, 50 ÷ 0.4 = 125
The difference between the numbers is increasing by 1 each time. Therefore, the next two numbers in the sequence are 40 - 5 = 35 and 35 - 6 = 29.