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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.
121 : 145 :: 169 : 197 :: 256 : ?

Option 1: 325

Option 2: 280

Option 3: 290

Option 4: 288


Team Careers360 18th Jan, 2024
Answer (1)
Team Careers360 19th Jan, 2024

Correct Answer: 290


Solution : Given:
121 : 145 :: 169 : 197 :: 256 : ?

Add 1 to the square root of the first number. Then find the square and add 1 to get the second number.
121 : 145→√121 = 11; (11 + 1) 2 + 1 = (12) 2 + 1 = 144 + 1 = 145
169 : 197→√169 = 13; (13 + 1) 2 + 1 = (14) 2 + 1 = 196 + 1 = 197
Similarly, 256 : ?→√256 = 16; (16 + 1) 2 + 1 = (17) 2 + 1 = 289 + 1 = 290

So, 290 is related to 256. Hence, the third option is correct.

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