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DIYA SARKAR

· started a discussion

· 1 Months ago

wrong ans is 7.5 (Question: 89871.2 )

17x2=34, 34-2=32
32x2=64.64-2=62


so the number should be.....17-2=15, 15/2=7.5

Question:
DIRECTIONS: What will come in place of the question mark (?) in the following number series?
122   62    32     17    ?
Options:
A) 3
B) 8.5
C) 9.5
D) 11
E) 11.5
Solution:
The series is formed by รท2+1 to the previous number.

Sagar Shaw

· commented

· 1 Months ago

YES DIYA I AGREE WITH U

Knowledge Expert

· commented

· 1 Months ago

Dear Student

If we Consider your rule, let the unknown number is X, thus

(X*2)-2=17
(X*2)=19
X=9.5
next
9.5*2= 19-2=17.

Required answer is option (C).

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