Find the missing number?
A. 5
B. 9
C. 13
D. 11
Answer: Option D
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Related Questions on Missing Number Finding
On one side one time plus and one time minus we get the same number
1st side
13-4=9
4+5=9
2nd side
4+7=11
15-4=11
3rd side
9+2=11
20-9=11
So we get 11 from both side that is the answer
????
13 -9 =4
15 -4 = 11
20 - 11= 9