Question

From the given options, select the group of numbers that is similar to the following group of numbers. {15, 21, 27}

• A. {12, 24, 32}
• B. {25, 40, 56}
• C. {40, 55, 75}
• D. {20, 28, 36}

Answer 1

Answer:

D. {20, 28, 36}

Each number in the given set is obtained by multiplying a certain number by 5, 7 and 9 respectively. {15, 21, 27} 3 x 5 = 15 3 x 7 = 21 3 x 9 = 27 Similarly, {20, 28, 36} 4 x 5 = 20 4 x 7 = 28 4 x 9 = 36