Question : Directions: 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. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
Option 1: (153 – 151 – 147)
Option 2: (171 – 169 – 167 )
Option 3: (183 – 181 – 178)
Option 4: (201 – 198 – 197)
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Correct Answer: (153 – 151 – 147)
Solution :
Directions:
Select the odd group of numbers.
Let's check the options –
First option:
(153 – 151 – 147); 153 – 151 = 2; 151 – 147 = 4
Second option:
(171 –169 –167 ); 171 –169 = 2; 169 –167 = 2
Third option:
(183 – 181 – 178); 183 –181 = 2; 181 –178 = 2
Fourth option:
(201 –198 –197); 201 –198 = 2; 198 –197 = 2
So, the first option is different from the other three options as the difference between the numbers is 2, 4 instead of 2, 2. Hence, the first option is correct.
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