In a certain code language, '134' means 'good and tasty', '478' means 'see good pictures', '729' means 'pictures are faint'. Which digit stands for 'good'?
In a row of 40 boys, when A was shifted 4 places towards the right, he became 10th from the right end. What was his earlier position from the left end of the row?
Explanation:
After shift 4 places right, position from right = 10. So new position from left = 40 − 10 + 1 = 31. Earlier position from left = 31 − 4 = 27.
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