Question

Melanie made a circular necklace. She puts beads evenly spaced around the necklace. If the 4th bead is directly across from the 11th bead, how many beads are on the necklace?

Answer 1

9514 1404 393

Answer:

14

Explanation:

Consider an analog clock. The number 3 is directly across from the number 9. The difference of those two numbers is 6, half the number of numbers on the clock face.

The difference between the numbers 4 and 11 is 7, half the number of beads on the necklace.

There are 7×2 = 14 beads on the necklace.