Multiple choice

Find the next term of the given series: $4, 5, 7, (...). 19$

  1. $8$
  2. $9$
  3. $10$
  4. $11$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The series is 4, 5, 7, x, 19. Differences: 1, 2, 4, 8. The differences are powers of 2. So, 7 + 4 = 11, and 11 + 8 = 19. The missing term is 11.

AI explanation

We find the differences between consecutive terms to establish the pattern. The differences begin with 5 minus 4 equals 1, and 7 minus 5 equals 2. Following this increasing pattern, the next difference is 4, making the missing term 7 plus 4 equals 11, and 11 plus 8 correctly yields the final term of 19. The missing term is 11.

Keep practicing — related questions