Instructions

What should come in the place of question mark (?) in the following number series ?

Question 88

400, 240, 144, 86.4, 51.84, 31.104, ?

Solution

Each term in the series equals 60% of the preceding term.

For example, 400 * 60% = 240
240 * 60% = 144
144 * 60% = 86.4
86.4 * 60% = 51.84
51.84 * 60% = 31.104

Hence, the term that comes next is 31.104*60% = 18.6624 which is option (d)

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