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Can you help find the missing number? 6, 20, 36, 48, 50, ?, 0 The answer apparently is 36 (NTSE 2013, First Level MAT), but I’m not sure how it was derived.

Can you help find the missing number?
 
6, 20, 36, 48, 50, ?, 0
 
The answer apparently is 36 (NTSE 2013, First Level MAT), but I’m not sure how it was derived.

Grade:

1 Answers

Ashwin
41 Points
8 years ago
HI,
 
6,20,36,48,50,?,0
you can write 6 as 1 * 1*6 
20 = 2*2*5
36 = 3*3* 4
48 = 4*4* 3
50 = 5*5*2
? = 6*6*1
0 = 7*7*0
 
therefore ? = 6*6 = 36 
hence 36 is the answer

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