Question
What number should come next?
8 11 21 15 18 21 22
8 11 21 15 18 21 22
Answer: Option B
Was this answer helpful ?
This is an alternating addition series, with a random number, 21, interpolated as every third number. The addition series alternates between adding 3 and adding 4. The number 21 appears after each number arrived at by adding 3.
Was this answer helpful ?
More Questions on This Topic :
Question 1. 11 16 21 26 31 36 41 ....
Question 2. 225, 224, __, 222, 221 ....
Question 3. 17, 19, 23, 29, 31, 37, __ ....
Question 4. 12, 14, 15, 16, 18, 20, __ ....
Question 5. 225, 196, 169, __, 121, 100, 81 ....
Question 6. 64, 125, 216, 343, __ ....
Question 7. FJUL: BOQQ:: LHRX:? ....
Question 8. EJOT: VQLG : BGLQ: ? ....
Question 9. JLNP : OMKI:: SUWY:? ....
Question 10. PALE: LEAP:: POSH:? ....
Latest Videos
Latest Test Papers
Submit Solution