A) 25
B) 30
C) 35
D) 40
Correct Answer: D
Solution :
Number of shaded squares in pattern 1=2 Number of shaded squares in pattern 2=4 Number of shaded squares in pattern 3=6 So, Pattern followed is \[(1\times 2),(2\times 2),(3\times 2),....i.e.,\] \[\text{2,4,6,}...\] Hence, Number of shaded squares in pattern 20 = \[20\times 2=40.\]You need to login to perform this action.
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