look at the pattern 1= 1 x 11 + 3=2 x 21 + 3+5=3 x 31+ 3 +5+7=4 x4. which of the following options is equal to 1+3=5+7+9+11+13+15+17+19=
A) 6 x 6
B) 10 x 10
C)11 x 11
D) 17 x 17
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Answer: (a)
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