Necesito 1 operación resuelta de cada elemento (+-*/) de los números reales.

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

What is the lcm of 16 and 40 ? 24 and 40 ?

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i