*Here comes a killer puzzle :* 9999=4 8888=8 1816=3 6666=4 8686=6 1212=0 6989=? Let's see can u crack this one... *HINT: No Maths to solve this... Just Observe... Observe... and think* Please submit your answer with justification.
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Given:
9999=4 8888=8 1816=3 6666=4 8686=6 1212=0
To find:
6989=?
Solution:
The count of the number of holes present in the digits of a given number.
From given, we have,
9999 = 4
The number 9999 has 4 holes.
8888 = 8
The number 8888 has 8 holes.
6666 = 4
The number 6666 has 4 holes.
8686 = 6
The number 8686 has 6 holes.
1212 = 0
The number 1212 has 0 holes.
6989 = 5
The number 6989 has 5 holes.
The digit 6 has 1 hole
The digit 9 has 1 hole
The digit 8 has 2 hole
The digit 9 has 1 hole
∴ 6989 = 5
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