The sum of 5 consecutive numbers is equal to 170. what is the product of largest and smallest numbers?

Let smallest number = x.
Then, x + x + 1 + x + 2 + x + 3 + x + 4 = 170
⇒ 5x + 10 = 170
⇒ x = 160 / 5
⇒ x = 32
∴ product of smallest and largest number = 32 x 36
= 1152