Question 19
The operation $\triangle$ is illustrated by $3\triangle3=2+3+4$, $5\triangle2=4+5$, and $9\triangle6=8+9+10+11+12+13$. If $x\triangle12=2022$, find $x$.
Convention: the second input is the number of consecutive terms, beginning one below the first input.
Answer format: enter one whole number without units. The source answer sheet uses four digits with leading zeros if needed; ordinary numeric entry is used here.
Convention: the second input is the number of consecutive terms, beginning one below the first input.
Answer format: enter one whole number without units. The source answer sheet uses four digits with leading zeros if needed; ordinary numeric entry is used here.