The same operation(s) are followed in all the given number pairs except one. Find that odd number pair.
(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding /deleting /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.)
Options:
a) 11 : 143
b) 13 : 169
c) 12 : 152
d) 15 : 195
SSC CGL General Intelligence and Reasoning – 15 September 2024
Solution:
Logic : Multiple by 13
a) 11 : 143 -> 11×13=143 (Follow the logic)
b) 13 : 169 -> 13×13=169 (Follow the logic)
c) 12 : 152 -> 12×13=156 (Not Follow the logic)
d) 15 : 195 -> 15×13=195 (Follow the logic)
Answer: Odd number pair is c) 12 : 152