Question 7
Compute $1\times2\times3+2\times3\times4+3\times4\times5+\cdots+13\times14\times15$.
TIMO 2021 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 1 Question 7
TIMO · TIMO 2021 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 1