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Ajeet Kumar
CAT Preparation Community 5y ago
A number N has 4 factors. Sum of the factors other than 1 & itself is 30 How many values N can take?
3
ANAND S 5y ago
3 values
avinash 5y ago
how??
ANAND S 5y ago
Since 2 factors are the number and 1,the other two factors should be 2 prime numbers who sum up to 30 as this limits the possibility of any more factors and satisfies the criterion. The possibilities are (23,7), (19,11),(13,17).
