Question

Which number set is different? : (11, 22, 44), (13, 26, 52), (15, 30, 60), (14, 28, 43)

• A. (11,22,44)
• B. (13,26,52)
• C. (15,30,60)
• D. (14,28,43)

Answer 1

Answer:

D. (14,28,43)

Check the pattern in each set:

• $((11, 22, 44)) → (22 = 11 \times 2), (44 = 22 \times 2)$

• $((13, 26, 52)) → (26 = 13 \times 2), (52 = 26 \times 2)$

• $((15, 30, 60)) → (30 = 15 \times 2), (60 = 30 \times 2)$

But:

• $((14, 28, 43)) → (28 = 14 \times 2), but (43 \neq 28 \times 2) (should be 56)$

So the different set is:

(14, 28, 43)