You are given two identical sequences in two rows: Sequence-I: 8, 4, 6, 15, 52.5, 236.5 Sequence-II: 5, A, B…

You are given two identical sequences in two rows: Sequence-I: 8, 4, 6, 15, 52.5, 236.5 Sequence-II: 5, A, B, C, D, E What is the entry in the place of C for the Sequence-II?
  1. 2.5
  2. 5
  3. 9.375
  4. 32.8125

Solution

In Sequence-I each term is the previous term multiplied by 0.5, 1.5, 2.5, 3.5, 4.5 respectively. Applying the same multipliers to Sequence-II: $A = 5 \times 0.5 = 2.5$, $B = 2.5 \times 1.5 = 3.75$, $C = 3.75 \times 2.5 = 9.375$. Hence C = 9.375.

Asked in: CSAT 2021

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