csc
Exam
Numerical Ability
Sequence and Series
find out the wrong number in the given sequence of numbers
15,16,34,105,424,2124,12756
Read Solution (Total 4)
-
- 15*1+1=16
16*2+2=34
34*3+3=105
105*4+4=424
424*5+5=2125
2125*6+6=12756
wrong number is 2124 - 9 years agoHelpfull: Yes(5) No(2)
- answer is 2124 so this series it should be replace by 2125
- 8 years agoHelpfull: Yes(0) No(1)
- wrong answer is 2124 because 424*5+5=2125
- 8 years agoHelpfull: Yes(0) No(0)
- 2nd term = (1st term) x 1 + 1 = 15 x 1 + 1 = 16.
3rd term = (2nd term) x 2 + 2 = 16 x 2 + 2 = 34.
4th term = (3th term) x 3 + 3 = 34 x 3 + 3 = 105.
5th term = (4th term) x 4 + 4 = 105 x 4 + 4 = 424
6th term = (5th term) x 5 + 5 = 424 x 5 + 5 = 2125
6th term should 2125 instead of 2124. - 8 years agoHelpfull: Yes(0) No(0)
csc Other Question
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