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A Learning Portal from Recruitment India
A Learning Portal from Recruitment India
What will come at the place of question mark?
4, 7, 12, 19, 28, ?
36
39
30
49
Answer with explanation
Answer: Option BExplanation
First term : 4
Second term: 4+3 = 7
Third term : 7+5 = 12
Fourth term : 12+7 = 19.
Fifth term : 19+9 = 28.
Therefore,
Next Terms : 28+11 = 39
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The given number series only one number is wrong. Find out the wrong number.
3, 12, 8, 19, 13, 32, 18, 42, 23, 52
19
42
Answer with explanation
Answer: Option CExplanation
The sequence is a combination of following two series:
I. 3, 8, 13, 18, 23 and II. 12, 19, 32, 42, 52
The pattern in I has a constant difference of +5, and the pattern in II has a constant difference of +10. So, in II, 19 is wrong and should be replaced by (12+10) i.e. 22
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6,5,24,25,144,(?)
155
160
175
170
Answer with explanation
Answer: Option CExplanation
as we can see that when 6*4=24 then 5*5=25 then again 24*6=144,hence 25*7=175 . there is a constant multiplication of x+1 where initially x is 4 then 5 then 6 and at last 7
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