IBM Company Logical Reasoning Number Series

40, 39, 37, 33, 26, 15, ?.

Read Solution (Total 3)

Ans : -1
40-39=1
39-37=2 (1+1)
37-33=4 (2+2)
44-26=7 (4+3)
26-15=11 (7+4)
then next term is 15-x=16 (11+5)
x= -1
8 years agoHelpfull: Yes(17) No(3)

-1 is the correct answer.
8 years agoHelpfull: Yes(2) No(1)
40-39=1
39-37=2
37-33=4
33-26=7
26-15=11
15-13=2 all prime number.
8 years agoHelpfull: Yes(0) No(14)

IBM Other Question

2, 7, -35, 7, 12, -60, 5, 10, ?. 1)3, 5, 2, 100, 4, 7, 3, 196, 1, 6, 5, ?.

2) -5, 1, -11, 23, 29, 17, -20, -14, ?.

3) 2, 3, 10, 15, 26, ?.

4) 5, 16, 22, 68, 28, 87, 34, 106, 11, ?.

5) 7776, 625, 64, 9, ?.

6) 4, 11, 66, 74, 370, 379, ?.

7) 2, 1, 2, 3, 8, 0, 1, 9, 1, 2, ?.

8) 2, 1/3, 2/3, 6, 7, 1/2, 3, 1/2, 14, 20, 1/5, 4, ?.

9) 0.03, 0.0018, 0.00108, 0.00648, ?.

10) 0, 1, 2, 0.5, 2, 3, 5, 1, 2, 0, 2, 1, 4, 2, 3, ?.

11) 37, 33, 9, 49, 58, 85, 25, 64, 29, 92, ?.