Question

Select the option that is related to the third number in the same way as the second number is related to the first number. 5 : 30 :: 9 : ?

• A. 81
• B. 72
• C. 65
• D. 90

Answer 1

Answer:

D. 90

x * (x + 1) 5x6 = 30 9x10=90