Which one of the following is the next number I in the series: 7, 7, 14, 42, 168, -?
Solution
Correct Answer: Option D
To solve them, you must find various relations between the gioven terms & answer accordingly. herein, first two terms are similar but it is because second 7 = 1st no. * 1 = 7*1=7 3rd term = 2nd * no*2 = 7 * 2= 14 4th = 3rd*3 = 14*3 = 42 5th = 4th *4 = 42*4 = 168 6th = 168*5 = 840
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