Question : Directions: In the following question, a series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
ar, cs, et, ?
Option 1: wy
Option 2: gv
Option 3: vb
Option 4: gu
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Correct Answer: gu
Solution :
Given:
ar, cs, et, ?
Add 2 to the place value of the first letter and 1 to the place value of the second letter of the previous term to obtain the next term of the series –
ar→a + 2 = c; r + 1 = s
cs→c + 2 = e; s + 1 = t
et→e + 2 = g; t + 1 = u
So, gu is the missing term of the series. Hence, the fourth option is correct.
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