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0 / 60 seg.
There are several books on a bookshelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?
T
H
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R
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R
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9
B
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_
K
S
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N
T
H
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S
H
_
L
F
.
T
H
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R
_
_
R
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3
B
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K
S
T
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T
H
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L
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F
T
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N
D
5
B
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K
S
T
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T
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R
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G
H
T
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I
N
T
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T
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L
,
T
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R
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R
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3
+
5
+
1
B
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K
S
Clue
THERE ARE 9 BOOKS ON THE SHELF. THERE ARE 3 BOOKS TO THE LEFT AND 5 BOOKS TO THE RIGHT. IN TOTAL, THERE ARE 3 + 5 + 1 BOOKS
11 PEOPLE WERE IN THE LIBRARY. WE HAVE 2 EYES EACH, AND THERE WAS NO MENTION ABOUT THE PAIRS OF EYES. SO WE HAVE 10 PEOPLE IN ADDITION TO THE MAN WHO DROPPED THE BOOK. HE CAN'T LOOK AT HIMSELF, BUT HE'S STILL IN THE LIBRARY
YES. HE TOOK AS MUCH TIME FOR THE SECOND HALF OF HIS TRIP AS THE WHOLE TRIP WOULD HAVE TAKEN ON FOOT. SO NO MATTER HOW FAST THE TRAIN WAS, HE LOST EXACTLY AS MUCH TIME AS HE SPENT ON THE TRAIN. HE WOULD HAVE SAVED 1⁄30 OF THE TIME BY WALKING ALL THE WAY
26 APPLES. HE STARTED WITH 8 APPLES ON THE FIRST DAY - 8, 14, 20, 26, 32
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