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Triangle Number Puzzle – Insert the missing number

(4 votes, average: 3.50 out of 5)

November 28, 2016 by puzzler Leave a Comment

Number Puzzle #166

Can you find the missing number in the below triangle from the 4 options given in the image ?

number-puzzle-9-17-160-319-475

Check your answer:-

Tried enough already?
Answer With Explanation
Answer: 949

Explanation: Its actually simple logic, generally we think to find out the relation between the opposite sides, but here the relation is in between adjacent numbers, which is very unusual though.

9 * 2 = 18 -1 = 17

160 *2 = 320 -1 = 319

475 * 2 = 950 – 1 = 949

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