Alguien me puede ayudar con este tipo de ejercicios de estadística Aplicada a la Toma de decisiones, o mejor conocido como Estadística II

Without multiplying, tell which product is larger and why. 5 × 1/3 or 5 × 2/3 a)5 × 1/3 because 1/3 is less than 2/3 b) 5 × 1/3 because 1/3 is greater than 2/3 c) 5 × 2/3 because 1/3 is less than 23 d) 5 × 23 because 1/3 is greater than 2/3

Consider the first four terms of the sequence below. what is the 8th term of this sequence?

What are two numbers that have a sum of 15