Latest interview Aptitude Question SOLUTION: 11*11=171 12*12=220 13*13=251 14*14=304 15*15=?

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(#M40157081) INTERVIEW question logical reasoning Keep an EYE

11*11=171
12*12=220
13*13=251
14*14=304
15*15=?

Asked In interview Lakshmipathi (8 years ago)

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bekay  (8 years ago)

Answer: 339 Calculation: Lets Say
A= 11*11=121-171=50
B= 12*12=144-220=76
C= 13*13=169-251=82
D= 14*14=196-304=108
E= 15*15=225-(???)=. 114
Now difference between A & B= 26 B&C=6 Again C&D=26 Hence D & E difference should be 6 again( As this is the pattern of puzzle). This 6 Should be added last previous difference no i.e 108 + 6=114 This 114 should be added to 15*15=225 Total comes to 339.

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Preethiga  (8 years ago)

11*11=121[171-121=50]
12*12=144[220-144=76]
13*13=169[251-169=82]
14*14=196[304-196=108]
if we see the given series the orginal solution is added with alternate 26 and 6.
in first 76-50=26, 82-76=6,108-82=26, and hence the solution for 15*15 should be 225+(108+6)=339

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SANDHIYA  (7 years ago)

take an ex: 23 25 27 29 31
add 1 st and 3rd term =23+27=50/2
=25
so,
given a+c=146/2=73;
the no will be like 71,73,75,77,79
so e value is 79

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