Latest IBM Aptitude Question SOLUTION: 52,62,42,78,89,68,49,61,39,63,76,?

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(#M40013730) IBM Logical Reasoning question Series Keep an EYE

52,62,42,78,89,68,49,61,39,63,76,?

Asked In IBM (11 years ago)

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Read Solution (9) :

Vinay Sipani   (11 years ago)

53

(52,62,42),(78,89,68),(49,61,39),(63,76,x)

In each bracket, the reverse of first and third are consecutive
i.e (25,24),(87,86),(94,93) => (36,35)

=> x = reverse of 35 = 53

Is this solution Helpfull? Yes (75) | No (3)  

Aditya Gangrade  (11 years ago)

ans :- 53
(52,62,42),(78,89,68),(49,61,39),(63,76,x)

52+10=62
62-20=42

78+11=89
89-21=68

49+12=61
61-22=39

similarly
63+13=76
76-23=53

ans is 53

Is this solution Helpfull? Yes (52) | No   

ANKIT CHAUDHARY  (11 years ago)

ans is 53
look three numbers pair first 52,62,42 the diffrence of 52 and 62 is 10 and diffrence of 52 and 42 is 10.second pair 78,89,68 diffrence of 78,89 is 11 and diffrence of 78,68 is 10.thired pair 49,61,39 the diffrence of 49,61 is 12 and diffrence of 49,39 is 10. so the diffrence between first two digits became +1 and second two digits diffrence is fixed=10.so in the fourth pair 63,76,?diffrence of 63,76 is 12 as first three pairs so the diffrence of 63,? is 10 and ans is=53.

Is this solution Helpfull? Yes (16) | No (1)  

Anandha Ganesh  (11 years ago)

Two ways you can solve this one way is as Vinay said
53

(52,62,42),(78,89,68),(49,61,39),(63,76,x)

In each bracket, the reverse of first and third are consecutive
i.e (25,24),(87,86),(94,93) => (36,35)

=> x = reverse of 35 = 53

Next one is consider (52,62,42)= take the middle term 62-52=10.Then add 10 to the following number and subtract it with the middle number so 10+10=20.62-20=42
Similarly (78,89,68)= (89-78=11 so 11+10=21 then 89-21=68) and finally (63,76,?)=76-63=13, 13+10=23 so 76-23=53..This is the correct answer this is simple but not simpler than the first one I guess

Is this solution Helpfull? Yes (5) | No   

ashish kumar agarwal  (10 years ago)

52-42=10;
78-68=10;
49-39=10;
63-x=10............so x=53

Is this solution Helpfull? Yes (3) | No   

Pranjal Pandey  (11 years ago)

(62-52=10,62-42=20)
(89-78=11,89-68=21)
(61-49=12,61-39=22)
(76-63=13,76-?=23)
Ans: 53

Is this solution Helpfull? Yes (1) | No   

payel Roy  (11 years ago)

(52,62,42)
52+10=62,52-10=42

(78,89,68)
78+11=89,78-10=68

(49,61,39)
49+12=61,49-10=39

(63,76,?)
63+13=76,63-10=53
ans:53

Is this solution Helpfull? Yes (1) | No   

rajanesh.k  (11 years ago)

ans = 53
52,(52+10),(62-20)
78,(78+11),(89-21)
49,(49+12),(61-22)
63,(63+13),(76-23)

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palsa.srinath  (7 years ago)

53 is correct answer

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