What is the LCM of 3·6, 0·009, 0·27?

What is the last digit of the sum S = 9²⁷ + 27⁹ ?

What is the sum of all the divisors of 256?

What is the digit at the 100th place of number (225)⁴⁰ ?

What is the median of all possible factors of 120 ?

If sides of a triangle are in the ratio 1:√3:2, what is the ratio of corresponding angles?