Question
Study the given pattern carefully and tell the number of dice in Pattern $20.$
✓
Answer
$(B)$: Number of dice in Pattern $1 = 3$
Number of dice in Pattern $2 = 5$
Number of dice in Pattern $3 = 7$
The rule followed is:
$(2 \times 1 + 1), ( 2 \times 2 + 1), (2 \times 3 + 1)....$ So, number of dice in Pattern $20$
$= 2 \times 20 + 1 = 41$
Number of dice in Pattern $2 = 5$
Number of dice in Pattern $3 = 7$
The rule followed is:
$(2 \times 1 + 1), ( 2 \times 2 + 1), (2 \times 3 + 1)....$ So, number of dice in Pattern $20$
$= 2 \times 20 + 1 = 41$
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