Question 15
How many primes $p$ make $p+81$ a perfect square?
TIMO 2021 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 1 Question 15
TIMO · TIMO 2021 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 1
TIMO · TIMO 2021 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 1