number series:-
2,10,40,120,?,240
(a)220 (b)240 (c)150 (d)200
with full explanation......
Answers
Answered by
17
Given:
2 , 10 , 40 , 120 , ? , 240
To Find:
Number at the place of ?
Answer:
If we look at the series, the pattern is simple.
The pattern is:
Previous Number * n
where n is the total number of terms in the series and n keeps on decreasing by 1.
Proof:
2 * 5 = 10
10 * 4 = 40
40 * 3 = 120
120 * 2 = 240
240 * 1 = 240
Here,
n keeps on decreasing.
Therefore,
The answer is option (b) i.e. 240.
Answered by
0
Answer:
the pattern is =÷1,÷2,÷3,÷4,÷5
so,missing tream =240÷1=240...
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