Radha was drawing a rangoli with chalk powder. She has 9 dots in a row.
How many dots are there in n rows?
(a) 9 + n (b) 9 + r (c) 9n (d) none of these
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How many dots are there in n rows?
c) 9n
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Answer:
if there are 9 dots in one row .. we can say .
in 1 row = 9 dots
in n rows = (9×n)dots
hence there are 9n dots in n rows
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