Multiple choice

Directions: Find the missing term in the following number series. 157, 159, 321, ?, 3873

  1. 889

  2. 921

  3. 967

  4. 989

  5. 1021
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pattern is: 157 * 1 + 2 = 159; 159 * 2 + 3 = 321; 321 * 3 + 4 = 967; 967 * 4 + 5 = 3873. The missing term is 967.

AI explanation

The pattern multiplies the previous term by progressively increasing numbers and then adds a constant of 2. Multiplying 157 by 1 and adding 2 gives 159, and multiplying 159 by 2 and adding 3 gives 321. Following this, multiplying 321 by 3 and adding 4 results in 967, which is verified by multiplying 967 by 4 and adding 5 to get 3873. The missing term is 967.

Keep practicing — related questions