Question 32

Complete the series. 31, 29, 24, 22, 17, (…)

Solution

31, 29, 24, 22, 17, (…)

as , this is a simple alternating number subtraction series, which subtracts 2, then 5.

then , 31-2=29, 29-5=24,24-2=22, 22-5=17 , 17-2=15

therefore , 15 will come next .

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