Thirty-six vehicles are parked in a parking l | vedclass

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(C) Let $C$ denote a car and $S$ denote a scooter.The sequence follows the pattern: $C, S, C, S, S, C, S, S, S, C, S, S, S, S, C, S, S, S, S, S, C, S,

Vedclass · Accepted Answer

$15$

Vedclass · Answer

(C) Let $C$ denote a car and $S$ denote a scooter.The sequence follows the pattern: $C, S, C, S, S, C, S, S, S, C, S, S, S, S, C, S, S, S, S, S, C, S, S, S, S, S, S, C, S, S, S, S, S, S, S, C$.There are $36$ vehicles in total. The second half consists of the $19^{th}$ to $36^{th}$ positions.Let's list the positions of the cars $(C)$: $1^{st}$ car is at position $1$.$2^{nd}$ car is at position $1+1+1 = 3$.$3^{rd}$ car is at position $3+2+1 = 6$.$4^{th}$ car is at position $6+3+1 = 10$.$5^{th}$ car is at position $10+4+1 = 15$.$6^{th}$ car is at position $15+5+1 = 21$.$7^{th}$ car is at position $21+6+1 = 28$.$8^{th}$ car is at position $28+7+1 = 36$.Total vehicles = $36$. The second half is from position $19$ to $36$.In the second half,the vehicles are: Position $19$ $(S)$,$20$ $(S)$,$21$ $(C)$,$22$ $(S)$,$23$ $(S)$,$24$ $(S)$,$25$ $(S)$,$26$ $(S)$,$27$ $(S)$,$28$ $(C)$,$29$ $(S)$,$30$ $(S)$,$31$ $(S)$,$32$ $(S)$,$33$ $(S)$,$34$ $(S)$,$35$ $(S)$,$36$ $(C)$.Counting the scooters $(S)$ in positions $19$ to $36$: there are $15$ scooters.

Thirty-six vehicles are parked in a parking lot in a single row. After the first car,there is one scooter. After the second car,there are two scooters. After the third car,there are three scooters,and so on. Work out the number of scooters in the second half of the row.

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