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madhuri

· started a discussion

· 1 Months ago

help (Question: 113890.0 )

explain please

Question:

What will come in place of question mark (?) in the given number series?


840, 420, ? ,35, 7

Options:
A) 210
B) 146
C) 170
D) 160
E) 140
Solution:
Ans: (e)140


Pattern is:


x(1/2), x(1/3), x(1/4), x(1/5)


840, 420, ? ,35, 7


840*(1/2) = 420


420*(1/3) = 140(Missing term or ?)


140*(1/4) = 35


35*(1/5) = 7

kanhaiya jha

· commented

· 1 Months ago

Pattern is:

x(1/2), x(1/3), x(1/4), x(1/5)

840, 420, ? ,35, 7

840*(1/2) = 420

420*(1/3) = 140(Missing term or ?)

140*(1/4) = 35

35*(1/5) = 7
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