Question : Directions: Select the option related to the sixth number in the same way as the first number is related to the second number and the third number is related to the fourth number. 8 : 72 :: 10 : 110 :: ? : 210
Option 1: 16
Option 2: 14
Option 3: 18
Option 4: 12
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Correct Answer: 14
Solution : Given: 8 : 72 :: 10 : 110 :: ? : 210
Add 1 to the first number, and then multiply the first number by the resultant number, to obtain the second number – Like, 8 : 72→8 × (8 + 1) = 8 × 9 = 72 And, 10 : 110→10 × (10 + 1) = 10 × 11 = 110 Similarly, follow the same pattern for ? : 210→ ⇒ a × (a + 1) = 210 ⇒ a2 + a = 210 ⇒ a2 + a – 210 = 0 ⇒ a = –15 and a = 14
So, 14 is the required missing number. Hence, the second option is correct.
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Question : Directions: Select the option related to the sixth number in the same way as the first number is related to the second number and the third number is related to the fourth number. 13 : 168 :: 16 : 255 :: ? : 143
Option 1: 14
Option 2: 15
Option 3: 11
Question : Directions: Select the option related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number. 18 : 190 :: 20 : 210 :: 22 : ?
Option 1: 230
Option 2: 210
Option 3: 190
Option 4: 200
Question : Directions: Select the option that is related to the sixth number in the same way as the first number is related to the second number and the third number is related to the fourth number. 1503 : 3004 :: 871 : 1740 :: ? : 142
Option 1: 98
Option 2: 110
Option 3: 72
Option 4: 65
Question : Directions: Select the option related to the sixth number in the same way as the first number is related to the second number and the third number is related to the fourth number. 4 : 66 :: 8 : 514 :: ? : 345
Option 1: 11
Option 2: 7
Option 3: 9
Option 4: 8
Question : Directions: Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number. 8 : 32 :: 12 : 72 :: 18 : ?
Option 1: 180
Option 2: 234
Option 3: 208
Option 4: 162
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