Question

What number should appear on the last card?

Answer 1

Answer:

Number 8 should appear on the last card.

If you add all the numbers given on one single Card then they sum up to 29.

For example, 7+11+11=29

14+7+8=29.... and so on.

Therefore, for last card 29-21= 8.

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Answer 2

when take 1 card and add all numbers =29

this series is followed.

so answer is 8