The average of five consecutive natural numbers is 50. What is the product of the smallest and the largest of the numbers?
Answer & explanation
Correct answer: option 1
Let the first number be x,
Sum of 5 consecutive number is = 50 × 5 = 250
According to the question
x + x + 1 + x + 2 + x + 3 + x + 4 = 250
= 5x + 10 = 250
= 5x = 250 – 10
= 5x = 240
= x = 48
Product of smallest and largest = x (x + 4) = 48 × 52 = 2496