Multiple choice Directions: Complete the series. HB : P : : CF : ? P Q R S T Reveal answer Fill a bubble to check yourself C Correct answer Explanation The place values of H and B are 8 and 2 are multiplied to get 16, which is the place value of P. Similarly, C and F (place values 3 and 6), when multiplied, give 18. 18 is the place value of R. So, this is the correct answer.