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Missing number Puzzle X 21 147

(8 votes, average: 2.38 out of 5)

July 28, 2017 by Ashish Deuskar Leave a Comment

Number Puzzle #173

2 6 18
4 20 100
X 21 147

find X

Check your answer:-

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Answer With ExplanationHide
Answer: X = 3
Solution
in first row next number is a multiplication of 3 and the previous number
second row, next number is a multiplication of 5 and the previous number
in third row 3rd number (147) is a multiplication of 7 and previous number, i.e. 21, thus X*7 = 21 => x = 21/7 = 3
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IF 5 7 3 20 10 30 then 95 45 ?

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