Select the odd group of numbers. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g.13 –Operations on 13 such as adding /subtracting /multiplying etc. 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. (153 – 151 – 147).
The logic used here is: 1st number - 2nd number = 2, 2nd number - 3rd number = 2
1: (153 – 151 – 147): 153 - 151 = 2, 151 - 147 = 4, This does not follow the logic.
2: (171 –169 –167): 171 - 169 = 2, 169 - 167 = 2
3: (183 – 181 – 179): 183 - 181 = 2, 181 - 179 = 2
4: (201 –199 –197): 201 - 199 = 2, 199 - 197 = 2