How many such letters are there in the given sequence which are immediately…
2023
How many such letters are there in the given sequence which are immediately preceded by a symbol but not immediately followed by a number? T, %, G, 5, L, @, #, Q, P, &, N, 5, P, T, %, K, @, %
- A.
2
- B.
3
- C.
0
- D.
1
Attempted by 267 students.
Show answer & explanation
Correct answer: A
Key idea: A letter qualifies if the previous element is a symbol (% , @ , # , &) and the next element is not a number. Sequence with positions: 1 T, 2 %, 3 G, 4 5, 5 L, 6 @, 7 #, 8 Q, 9 P, 10 &, 11 N, 12 5, 13 P, 14 T, 15 %, 16 K, 17 @, 18 %. Position 3 (G): preceded by % (symbol) but followed by 5 (number) → does not qualify.
Position 8 (Q): preceded by # (symbol) and followed by P (not a number) → qualifies.
Position 11 (N): preceded by & (symbol) but followed by 5 (number) → does not qualify.
Position 16 (K): preceded by % (symbol) and followed by @ (not a number) → qualifies.
Answer: 2 (the letters Q and K).
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