In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which the numbers are related in the same way as are the numbers of the following sets. (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 / 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) 3 - 31 5 - 51
10 - 101
Rule: the second number is the square of the first number plus the first number itself, which equals n × n + n = n(n+1), but checking: 3 → 31 does not match 3 × 4 = 12.
Try: second = first² + first×multiple. 3 → 3²+22 = 31? No. Simpler: 3 → "3" concatenated with "1" gives 31; 5 → "5" concatenated with "1" gives 51.
So the rule is: write n and append the digit 1 to its right.
2 → 21 (not 11), 10 → 101 (append 1), 9 → 91 (not 81), 4 → 41 (not 31). Only 10 → 101 follows the pattern.
Hence, 10 - 101.
Similar Questions
Select the pair that follows the same pattern as that followed by the two set of pairs given below. Both pairs follow the same pattern.
OKN−JFI
GCF−BXA
Based on the English alphabetical order, three of the following four letter cluster pairs are alike in a certain way and thus form a group. Which is the one that does not belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter cluster)
Important Questions from Analogy
Select the option that is related to the third term in the same way as the second term is related to the first term.
Day: Night :: Morning : ?Select the option that is related to the third term in the same way as the second term is related to the first term.
India : Country :: Delhi : ..........Select the option that is related to the third term in the same way as the second term is related to the first term.
MATE: NATE :: FATE: ?Select the option that is related to the third term in the same way as the second term is related to the first term.
13 : 196 :: 9 : .......
Select the related word pair from the given alternatives. Afghanistan : Kabul :: ....... : .........
