Start learning 50% faster. Sign in now
The given sequence is 5, 20, 80, 320, ………., 5120 We can see that, the given series is a geometric progression with common ratio 4. nth term of a geometric progression is given as: ar(n-1) Where, a = first term, r = common ratio ∴ 5 × 4(n-1) = 5120 ⇒ 4(n-1)= 5120/5 = 1024 ⇒ n – 1 = 5 ⇒ n = 6
21, 63, 315, ?, 19845, 218295
6 10 ? 210 1672 16710
...24, 33, 50, ?, 108, 149
4, 8, 24, ?, 840, 9240
The question below is based on the given series I. The series I satisfy a certain pattern, follow the same pattern in series II and answer the questions...
0 2 6 12 20 ?
...31, 16.5, 18, ?, 60.5, 154.25
5, 14, 41, 122, 365, 1094, ?
105 107 111 114 ? 127
261 256 246 231 211 ?
...