Question
The picture shows only the first 4 rows of black and white cards placed laid out by Ali. In total, 608 rows of cards are needed. The remaining cards will be arranged in the pattern as shown. How many black cards will Ali need for the whole banner?
3 m

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The picture shows only the first 4 rows of black and white cards placed laid out by Ali. In total, 608 rows of cards are needed. The remaining cards will be arranged in the pattern as shown. How many black cards will Ali need for the whole banner?