Question : Directions: Select the term from the given options that can replace the question mark (?) in the given series to make it logically complete.
BO 88, ?, HU 80, KX 76, NA 72
Option 1: DS 86
Option 2: DR 82
Option 3: ER 84
Option 4: ES 86
Correct Answer: ER 84
Solution :
Given:
BO 88, ?, HU 80, KX 76, NA 72
For letter-based series –
Add 3 in the place value of the first letter and the second letter of the previous term of the given series.
BO→B + 3 = E; O + 3 = R→ER
ER→E + 3 = H; R + 3 = U→HU
HU→H + 3 = K; U + 3 = X→KX
KX→K + 3 = N; X + 3 = A→NA
For number-based series –
Subtract 4 from the previous numeric term of the given series.
88 – 4 = 84; 84 – 4 = 80; 80 – 4 = 76; 76 – 4 = 72
So, ER 84 is the missing term in the series. Hence, the third option is correct.
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