Four groups of numbers are given out of which the numbers in three groups bear…
2020
Four groups of numbers are given out of which the numbers in three groups bear a certain common relationship. Choose the group in which the numbers are differently related.
- A.
13 : 78 : 144
- B.
18 : 108 : 216
- C.
24 : 144 : 288
- D.
16 : 96 : 192
Attempted by 15 students.
Show answer & explanation
Correct answer: A
Key idea: In three groups, the second number is 6 times the first and the third number is 12 times the first.
18:108:216 gives 18×6=108 and 18×12=216.
24:144:288 gives 24×6=144 and 24×12=288.
16:96:192 gives 16×6=96 and 16×12=192.
13:78:144 has 13×6=78 but 13×12=156, not 144.
Answer: Option 0 is differently related.