Observe the pattern below. 91 × 9 = 91 × (100 – 1) = 9100 – 91 = 9009. Which of these is equivalent to 91 × 9999?
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Answer:
91×11×1=1001
91×11×2=2002
91×11×3=3003
91×11×4=4004
91×11×5=5005
91×11×6=6006
91×11×7=7007
91×11×8=8008
91×11×9=9009
91×11×10=10,010
Another pattern for
143×7×1=1001
143×7×2=2002
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